RDF Site Summary 1.0 Modules: PRISM

Authors

Tony Hammond
Nature Publishing Group

Version

Latest Version: http://purl.org/rss/1.0/modules/prism/

DRAFT 0.5 2008-11-01

DRAFT 0.4 2008-10-24

DRAFT 0.3 2008-08-21

DRAFT 0.2 2004-09-02

DRAFT 0.1 2003-07-16

This RSS 1.0 module has been reviewed by the IDEAlliance PRISM Working Group and reflects the current PRISM specification, version 2.0, and the forthcoming PRISM specification, version 2.1. It is intended that revised versions of this module will be published as the PRISM specification is upgraded.

This module allows RSS 1.0 newsfeeds to make use of the basic PRISM metadata vocabulary.

Rights

Permission to use, copy, modify and distribute the RDF Site Summary 1.0 Specification and its accompanying documentation for any purpose and without fee is hereby granted in perpetuity, provided that the above copyright notice and this paragraph appear in all copies. The copyright holders make no representation about the suitability of the specification for any purpose. It is provided "as is" without expressed or implied warranty.

This copyright applies to the RDF Site Summary 1.0 Specification and accompanying documentation and does not extend to the RSS format itself.

Description

The Publishing Requirements for Industry Standard Metadata (PRISM) specification defines a standard for interoperable content description, interchange, and reuse in both traditional and electronic publishing contexts. PRISM recommends the use of certain existing standards, such as XML, RDF, the Dublin Core, and various ISO specifications for locations, languages, and date/time formats. Beyond those recommendations, it defines a small number of XML namespaces and controlled vocabularies of values, in order to meet the goals listed above.

The PRISM working group, a joint effort of representatives from publishers and vendors in an initiative organized under IDEAlliance, prepared the PRISM specifications.

The PRISM RSS 1.0 module augments the RSS core and Dublin Core module's metadata with channel and item-level elements specific to PRISM-based sites.

Namespace Declarations

Early versions of the PRISM spec incorrectly defined the namespace form as follows:

(v1.0, Apr. 2001, PDF) xmlns:prism="http://prismstandard.org/namespaces/1.0/basic/"
(v1.1, Feb. 2002, PDF) xmlns:prism="http://prismstandard.org/namespaces/1.0/basic/"
(v1.2, Mar. 2004, PDF) xmlns:prism="http://prismstandard.org/namespaces/1.2/basic/"

Later versions of the PRISM spec corrected the namespace form as below:

(v1.3, Oct. 2005, ASP) xmlns:prism="http://prismstandard.org/namespaces/basic/1.2/"
(v2.0, Feb. 2008, ZIP) xmlns:prism="http://prismstandard.org/namespaces/basic/2.0/"

Two further namespaces are introduced for the 2.1 basic vocabulary and the usage rights vocabulary. Note that these vocabularies are currently released for comment and are expected to be approved in 2009.

(v2.1, Oct. 2008, ZIP) xmlns:prism="http://prismstandard.org/namespaces/basic/2.1/"
(v2.1, Oct. 2008, ZIP) xmlns:prismUsageRights="http://prismstandard.org/namespaces/prismusagerights/2.1/"

Note that the current version is v2.0 with Errata (July 2008). The forthcoming version, v2.1, was released for public comment in October 2008 and is included here for ready reference..

Model

<channel>, <item>, <image>, and <textinput> Elements:

This section lists each of the elements used in all versions of the basic PRISM vocabulary together with a content model for that element. For ready reference the table below shows each of the PRISM elements and the versions in which that element appears, together with the subsection numbers for the relevant versions.

The latest version in which a PRISM element appears is indicated in the listing by the version number given in brackets. For a definitive description of element usage, however, the reader should consult the relevant PRISM specifications.

Element [Qualifiers]	v1.0 (2001)	v1.1 (2002)	v1.2 (2004)	v1.3 (2005)	v2.0 (2008)	v2.1 (2009?)
A – PRISM Elements	n = 35	n = 40	n = 51	n = 51	n = 57	n = 58
<prism:aggregationType>	–	–	–	–	4.2.1	4.2.1
<prism:alternateTitle> [@...]	–	–	–	–	4.2.2	4.2.2
<prism:byteCount>	–	–	5.3.1	4.2.1	4.2.3	4.2.3
<prism:category>	5.3.1	6.3.1	5.3.2	4.2.2	–	–
<prism:channel>	–	–	–	–	4.2.4	4.2.4
<prism:complianceProfile>	–	–	5.3.3	4.2.3	4.2.5	4.2.5
<prism:contentLength>	5.3.2	6.3.2	–	–	–	–
<prism:copyright>	5.3.3	6.3.3	5.3.4	4.2.4	4.2.6	4.2.6
<prism:corporateEntity>	–	–	5.3.5	4.2.5	4.2.7	4.2.7
<prism:coverDate>	–	–	5.3.6	4.2.6	4.2.8	4.2.8
<prism:coverDisplayDate>	–	–	5.3.7	4.2.7	4.2.9	4.2.9
<prism:creationDate>	–	–	5.3.8	4.2.8	4.2.10	4.2.10
<prism:creationTime>	5.3.4	6.3.4	–	–	–	–
<prism:dateReceived>	–	–	–	–	4.2.11	4.2.11
<prism:distributor>	5.3.5	6.3.5	5.3.9	4.2.9	4.2.12	4.2.12
<prism:doi>	–	–	–	–	4.2.13	4.2.13
<prism:edition>	–	6.3.6	5.3.10	4.2.10	4.2.14	4.2.14
<prism:eIssn>	–	–	5.3.11	4.2.11	4.2.15	4.2.15
<prism:embargoDate>	–	–	5.3.12	4.2.12	4.2.16	4.2.16
<prism:endingPage>	–	–	5.3.13	4.2.13	4.2.17	4.2.17
<prism:event>	5.3.6	6.3.7	5.3.14	4.2.14	4.2.18	4.2.18
<prism:expirationDate>	–	–	5.3.15	4.2.15	4.2.19	4.2.19
<prism:expirationTime>	5.3.7	6.3.8	–	–	–	–
<prism:genre>	–	–	–	–	4.2.20	4.2.20
<prism:hasAlternative>	5.3.8	6.3.9	5.3.16	4.2.16	4.2.21	4.2.21
<prism:hasCorrection>	5.3.9	6.3.10	5.3.17	4.2.17	4.2.22	4.2.22
<prism:hasFormat>	5.3.10	6.3.11	5.3.18	4.2.18	–	–
<prism:hasPart>	5.3.11	6.3.12	5.3.19	4.2.19	–	–
<prism:hasPreviousVersion>	–	–	5.3.20	4.2.20	4.2.23	4.2.23
<prism:hasTranslation>	5.3.12	6.3.13	5.3.21	4.2.21	4.2.24	4.2.24
<prism:hasVersion>	5.3.13	6.3.14	–	–	–	–
<prism:industry>	5.3.14	6.3.15	5.3.22	4.2.22	4.2.25	4.2.25
<prism:isbn>	–	–	–	–	–	4.2.26
<prism:isAlternativeFor>	5.3.15	6.3.16	–	–	–	–
<prism:isBasedOn>	5.3.16	6.3.17	–	–	–	–
<prism:isBasisFor>	5.3.17	6.3.18	–	–	–	–
<prism:isCorrectionOf>	5.3.18	6.3.19	5.3.23	4.2.23	4.2.26	4.2.27
<prism:isFormatOf>	5.3.19	6.3.20	5.3.24	4.2.24	–	–
<prism:isPartOf>	5.3.20	6.3.21	5.3.25	4.2.25	–	–
<prism:isReferencedBy>	5.3.21	6.3.22	5.3.26	4.2.26	–	–
<prism:isRequiredBy>	5.3.23	6.3.24	5.3.27	4.2.27	–	–
<prism:issn>	–	–	5.3.28	4.2.28	4.2.27	4.2.28
<prism:issueIdentifier>	–	–	5.3.29	4.2.29	4.2.28	4.2.29
<prism:issueName>	–	–	5.3.30	4.2.30	4.2.29	4.2.30
<prism:isTranslationOf>	5.3.22	6.3.23	5.3.31	4.2.31	4.2.30	4.2.31
<prism:isVersionOf>	5.3.24	6.3.25	5.3.32	4.2.32	–	–
<prism:keyword>	–	–	–	–	4.2.31	4.2.32
<prism:killDate>	–	–	–	–	4.2.32	4.2.33
<prism:location>	5.3.25	6.3.26	5.3.33	4.2.33	4.2.33	4.2.34
<prism:metadataContainer>	–	–	–	–	4.2.34	4.2.35
<prism:modificationDate>	–	–	5.3.34	4.2.34	4.2.35	4.2.36
<prism:modificationTime>	5.3.26	6.3.27	–	–	–	–
<prism:number>	–	6.3.28	5.3.35	4.2.35	4.2.36	4.2.37
<prism:object>	5.3.27	6.3.29	–	–	4.2.37	4.2.38
<prism:objectTitle>	–	–	5.3.36	4.2.36	–	–
<prism:organization>	5.3.28	6.3.30	5.3.37	4.2.37	4.2.38	4.2.39
<prism:originPlatform> [@...]	–	–	–	–	4.2.39	4.2.40
<prism:page>	–	6.3.31	–	–	–	–
<prism:pageRange>	–	–	–	–	4.2.40	4.2.41
<prism:person>	5.3.29	6.3.32	5.3.38	4.2.38	4.2.41	4.2.42
<prism:publicationDate>	–	–	5.3.39	4.2.39	4.2.43	4.2.43
<prism:publicationName>	–	–	5.3.40	4.2.40	4.2.44	4.2.44
<prism:publicationTime>	5.3.30	6.3.33	–	–	–	–
<prism:receptionDate>	–	–	5.3.41	4.2.41	–	–
<prism:receptionTime>	5.3.31	6.3.34	–	–	–	–
<prism:references>	5.3.32	6.3.35	5.3.42	4.2.42	–	–
<prism:releaseTime>	5.3.33	6.3.36	–	–	–	–
<prism:requires>	5.3.34	6.3.37	5.3.43	4.2.43	–	–
<prism:rightsAgent>	5.3.35	6.3.38	5.3.44	4.2.44	4.2.45	4.2.45
<prism:section>	–	6.3.39	5.3.45	4.2.45	4.2.46	4.2.46
<prism:startingPage>	–	–	5.3.46	4.2.46	4.2.47	4.2.47
<prism:subsection1>	–	–	5.3.47	4.2.47	4.2.48	4.2.52
<prism:subsection2>	–	–	5.3.48	4.2.48	4.2.49	4.2.53
<prism:subsection3>	–	–	–	–	4.2.50	4.2.54
<prism:subsection4>	–	–	–	–	4.2.51	4.2.55
<prism:teaser> [@...]	–	–	5.3.49	4.2.49	4.2.52	4.2.56
<prism:ticker>	–	–	–	–	4.2.53	4.2.57
<prism:timePeriod>	–	–	–	–	4.2.54	4.2.58
<prism:url>	–	–	–	–	4.2.55	4.2.59
<prism:versionIdentifier>	–	–	–	–	4.2.56	4.2.60
<prism:volume>	–	6.3.40	5.3.50	4.2.50	4.2.57	4.2.61
<prism:wordCount>	–	–	5.3.51	4.2.51	4.2.58	4.2.62
B – PRISM Usage Rights Elements						n = 15
<prismUsageRights:adultContentWarning> [@...]	–	–	–	–	–	4.1.1
<prismUsageRights:agreement> [@...]	–	–	–	–	–	4.1.2
<prismUsageRights:copyright> [@...]	–	–	–	–	–	4.1.3
<prismUsageRights:creditLine> [@...]	–	–	–	–	–	4.1.4
<prismUsageRights:embargoDate> [@...]	–	–	–	–	–	4.1.5
<prismUsageRights:exclusivityEndDate> [@...]	–	–	–	–	–	4.1.6
<prismUsageRights:expirationDate> [@...]	–	–	–	–	–	4.1.7
<prismUsageRights:imageSizeRestriction> [@...]	–	–	–	–	–	4.1.8
<prismUsageRights:optionEndDate> [@...]	–	–	–	–	–	4.1.9
<prismUsageRights:permissions> [@...]	–	–	–	–	–	4.1.10
<prismUsageRights:restrictions> [@...]	–	–	–	–	–	4.1.11
<prismUsageRights:reuseProhibited>	–	–	–	–	–	4.1.12
<prismUsageRights:rightsAgent> [@...]	–	–	–	–	–	4.1.13
<prismUsageRights:rightsOwner> [@...]	–	–	–	–	–	4.1.14
<prismUsageRights:usageFee> [@...]	–	–	–	–	–	4.1.15

Some of the content models used in this section provide make use of the following parameter entity references:

Parameter Entity	Definition
%IntegerDatatype;	An attribute value of rdf:datatype whose value is the URI for the W3C XML Schema datatype for positiveInteger, i.e. "http://www.w3.org/TR/xmlschema-2/#positiveInteger".
%TimeDatatype;	An attribute value of rdf:datatype whose value is the URI for the W3C XML Schema datatype for dateTime, i.e. "http://www.w3.org/TR/xmlschema-2/#dateTime".
%AuthorityReference;	An attribute value of rdf:resource whose value is a URI referring to a term in a controlled vocabulary.
%ResourceReference;	An attribute value of rdf:resource whose value is a URI reference to a resource. The set of %AuthorityReferences; is a subset of the set of %ResourceReferences;.
%TimeSpecification;	A string specifying a date and time according to the W3C profile of ISO 8601 (e.g., YYYY-MM-DDThh:mm:ss.ssTZD).

A – PRISM Elements

[v2.1] <prism:aggregationType rdf:resource="%AuthorityReference;"> ( EMPTY ) | <prism:aggregationType> ( #PCDATA )
The aggregation type specifies the unit of aggregation.
[v2.1] <prism:alternateTitle> ( #PCDATA ) | <prism:alternateTitle rdf:value="#PCDATA" ... > | <prism:alternateTitle rdf:resource="%ResourceReference;" ... >
An alternate title or alternate headline for a resource that may be used in a table of contents, a popup etc. and can vary with platform.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:resource = "#PCDATA" | rdf:value = "#PCDATA"
- (O) prism:platform = "#PCDATA"
[v2.1] <prism:byteCount rdf:datatype="%IntegerDatatype;"> ( EMPTY ) | <prism:byteCount> ( #PCDATA )
Size, in 8-bit bytes, of the resource.
[v1.3] <prism:category rdf:resource="%AuthorityReference;"> ( EMPTY ) | <prism:category> ( #PCDATA )
The nature or genre of a resource's intellectual content.
[v2.1] <prism:channel rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:channel> ( #PCDATA )
Web channel assigned to the resource.
[v2.1] <prism:complianceProfile rdf:resource="%AuthorityReference;"> ( EMPTY ) | <prism:complianceProfile> ( #PCDATA )
The PRISM specification compliance profile that the resource adheres to.
[v1.1] <prism:contentLength> ( #PCDATA )
Size, in 8-bit bytes, of the resource.
[v2.1] <prism:copyright rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:copyright> ( #PCDATA )
Copyright statement for the resource.
[v2.1] <prism:corporateEntity rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:corporateEntity> ( #PCDATA )
The name(s) of publisher's organizational units related to the resource, either as the financial owner or group responsible for the resource, and at a lower hierarchical level than the corporate entity named in dc:publisher.
[v2.1] <prism:coverDate rdf:datatype="%TimeDatatype;"> ( %TimeSpecification; ) | <prism:coverDate> ( %TimeSpecification; )
Date on the cover of a magazine issue, suitable for storing into a database field with a "date" datatype.
[v2.1] <prism:coverDisplayDate rdf:datatype="%TimeDatatype;"> ( %TimeSpecification; ) | <prism:coverDisplayDate> ( %TimeSpecification; )
Date on the cover of a magazine issue, provided as a textual string.
[v2.1] <prism:creationDate rdf:datatype="%TimeDatatype;"> ( %TimeSpecification; ) | <prism:creationDate> ( %TimeSpecification; )
Date (and potentially the time) the identified resource was first created.
[v1.1] <prism:creationTime> ( %TimeSpecification; )
Date and time the identified resource was first created.
[v2.1] <prism:dateReceived rdf:datatype="%TimeDatatype;"> ( %TimeSpecification; ) | <prism:dateReceived> ( %TimeSpecification; )
Date (and potentially time) the resource was received on current system.
[v2.1] <prism:distributor rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:distributor> ( #PCDATA )
An identifier for the distributor of the resource.
[v2.1] <prism:doi> ( #PCDATA )
The Digital Object Identifier, DOI, for the article.
[v2.1] <prism:edition> ( #PCDATA )
An identifier for one of several alternate issues of a magazine or other resource.
[v2.1] <prism:eIssn> ( #PCDATA )
ISSN for an electronic version of the issue in which the resource occurs.
[v2.1] <prism:embargoDate rdf:datatype="%TimeDatatype;"> ( %TimeSpecification; ) | <prism:embargoDate> ( %TimeSpecification; )
Earliest date (potentially including time) the resource may be used according to the rights agreement or to a clause in the rights agreement.
[v2.1] <prism:endingPage> ( #PCDATA )
Identifies the last page number for the printed resource.
[v2.1] <prism:event rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:event> ( #PCDATA )
An event (social gathering, phenomenon, or more generally something that happened at a specifiable place and time) referred to in order to indicate a subject of the resource.
[v2.1] <prism:expirationDate rdf:datatype="%TimeDatatype;"> ( %TimeSpecification; ) | <prism:expirationDate> ( %TimeSpecification; )
The date (potentially including time) by which the resource must be removed from availability to users or customers according to a rights agreement.
[v1.1] <prism:expirationTime> ( %TimeSpecification; )
Latest date and time that the resource may be used according to the rights agreement, or clause in the rights agreement.
[v2.1] <prism:genre rdf:resource="%AuthorityReference;"> ( EMPTY ) | <prism:genre> ( #PCDATA )
Describes the genre, or the intellectual content of the resource.
[v2.1] <prism:hasAlternative rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:hasAlternative> ( #PCDATA )
Identifies an alternative resource in case the current resource cannot be used (typically because of rights restrictions) or there is a platform-based alternative.
[v2.1] <prism:hasCorrection rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:hasCorrection> ( #PCDATA )
Identifies any known corrections to the current resource.
[v1.3] <prism:hasFormat rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:hasFormat> ( #PCDATA )
Identifies another resource, which is essentially the same intellectual content as the current resource, but presented in another file format, or after some mechanical transformation such as a conversion to a different resolution, different color depth, etc.
[v1.3] <prism:hasPart rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:hasPart> ( #PCDATA )
The described resource includes the referenced resource either physically or logically.
[v2.1] <prism:hasPreviousVersion rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:hasPreviousVersion> ( #PCDATA )
Identifies a previous version of the current resource.
[v2.1] <prism:hasTranslation rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:hasTranslation> ( #PCDATA )
The described resource has been translated into another language, and the referenced resource is that translation.
[v1.1] <prism:hasVersion> ( #PCDATA )
The described resource has a version, edition, or adaptation, namely, the referenced resource. Changes in version imply substantive changes in intellectual content rather than differences in format.
[v2.1] <prism:industry rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:industry> ( #PCDATA ) | <prism:industry> )
An industry or industry sector, referred to in order to indicate a subject of the resource.
[v2.1] <prism:isbn> ( #PCDATA )
The ISBN for the publication in which the resource was published.
[v1.1] <prism:isAlternativeFor> ( #PCDATA )
The described resource can be substituted for the referenced resource.
[v1.1] <prism:isBasedOn> ( #PCDATA )
The described resource is a performance, production, derivation, translation, adaptation or interpretation of the referenced resource.
[v1.1] <prism:isBasisFor> ( #PCDATA )
The described resource has a performance, production, derivation, translation, adaptation or interpretation, namely the referenced resource.
[v2.1] <prism:isCorrectionOf rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:isCorrectionOf> ( #PCDATA )
The described resource is a corrected version of the referenced resource.
[v1.3] <prism:isFormatOf rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:isFormatOf> ( #PCDATA )
The current resource is the same intellectual content of the referenced resource, but presented in another format.
[v1.3] <prism:isPartOf rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:isPartOf> ( #PCDATA )
The described resource is a physical or logical part of the referenced resource.
[v1.3] <prism:isReferencedBy rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:isReferencedBy> ( #PCDATA )
The described resource is referenced, cited, or otherwise pointed to by the referenced resource. [DCMI-R]
[v1.3] <prism:isRequiredBy rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:isRequiredBy> ( #PCDATA )
The described resource is required by the referenced resource, either physically or logically.
[v2.1] <prism:issn> ( #PCDATA )
The ISSN for the publication in which the resource was published.
[v2.1] <prism:issueIdentifier> ( #PCDATA )
An additional identifier, typically used to record an identifier for a specific issue of a magazine or other resource, as distinct from the "special" name element, prism:issueName.
[v2.1] <prism:issueName> ( #PCDATA )
An additional identifier, typically used for major issues of a magazine or other resource.
[v2.1] <prism:isTranslationOf rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:isTranslationOf> ( #PCDATA )
The described resource is a human-language translation of the referenced resource.
[v1.3] <prism:isVersionOf rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:isVersionOf> ( #PCDATA )
The described resource is a version, edition, or adaptation of the referenced resource.
[v2.1] <prism:keyword> ( #PCDATA )
An element used to tag keywords that are likely to be used in search queries.
[v2.1] <prism:killDate rdf:datatype="%TimeDatatype;"> ( %TimeSpecification; ) | <prism:killDate> ( %TimeSpecification; )
Date (and potentially the time) the identified resource is to be removed from online publications. This includes both web and mobile content.
[v2.1] <prism:location rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:location> ( #PCDATA )
A geospatial location, referred to in order to indicate a subject of the resource.
[v2.1] <prism:metadataContainer> ( EMPTY )
Containing element for metadata that is stored in an xml file that is separate from the media asset.
[v2.1] <prism:modificationDate rdf:datatype="%TimeDatatype;"> ( %TimeSpecification; ) | <prism:modificationDate> ( %TimeSpecification; )
Date and time the resource was last modified.
[v1.1] <prism:modificationTime> ( %TimeSpecification; )
Date and time the resource was last modified.
[v2.1] <prism:number> ( #PCDATA )
Indication of the magazine issue.
[v2.1] <prism:object rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:object> ( #PCDATA )
The name of a physical or virtual object, referred to in order to indicate a subject of the resource.
[v1.3] <prism:objectTitle rdf:resource="%AuthorityReference;"> ( EMPTY ) | <prism:objectTitle> ( #PCDATA )
The name of a physical or virtual object, referred to in order to indicate a subject of the resource.
[v2.1] <prism:organization rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:organization> ( #PCDATA )
The name of an organization, referred to in order to indicate a subject of the resource.
[v2.1] <prism:originPlatform> ( #PCDATA ) | <prism:originPlatform rdf:value="#PCDATA" ... > | <prism:originPlatform rdf:resource="%ResourceReference;" ... >
The original platform where a resource’s intellectual content was delivered.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:resource = "#PCDATA" | rdf:value = "#PCDATA"
- (O) prism:platform = "#PCDATA"
[v1.1] <prism:page> ( #PCDATA )
Identifies the pages in which the resource was published. Contiguous spans of pages SHOULD be denoted using the '-' (hyphen) character. Noncontiguous pages SHOULD be denoted using the ',' (comma) character.
[v2.1] <prism:pageRange> ( #PCDATA )
Identifies the page range for the published print version of the resource.
[v2.1] <prism:person rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:person> ( #PCDATA )
The proper name of a person, referred to in order to indicate a subject of the resource.
[v2.1] <prism:publicationDate rdf:datatype="%TimeDatatype;"> ( %TimeSpecification; ) | <prism:pulicationDate> ( %TimeSpecification; )
Date and time (in date time format) when the resource is published on any platform.
[v2.1] <prism:publicationName rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:publicationName> ( #PCDATA )
Title of the magazine, or other publication, in which a resource was/will be published.
[v1.1] <prism:publicationTime> ( %TimeSpecification; )
Announced date and time when the resource is released to the public.
[v1.3] <prism:receptionDate> ( %TimeSpecification; )
Date (and potentially time) the resource was received on current system.
[v1.1] <prism:receptionTime> ( %TimeSpecification; )
Date and time the resource was received on current system.
[v1.3] <prism:references rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:references> ( #PCDATA )
The described resource references, cites, or otherwise points to the referenced resource.
[v1.1] <prism:releaseTime> ( %TimeSpecification; )
Earliest date and time the resource may be used according to the rights agreement, or clause in the rights agreement.
[v1.3] <prism:requires rdf:resource="%ResourceReference;"> ( EMPTY )
The described resource requires the referenced resource to support its function, delivery, or coherence of content.
[v2.1] <prism:rightsAgent rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:rightsAgent> ( #PCDATA )
Name, and possibly contact information, for the person or organization that should be contacted to license the rights to use a resource.
[v2.1] <prism:section> ( #PCDATA )
Name of the publication section in which the resource is categorized. A section is a logical subdivision of a publication which helps to identify the general subject domain of the contained content.
[v2.1] <prism:startingPage> ( #PCDATA )
Identifies the first page number for the published version of the resource.
[v2.1] <prism:subsection1> ( #PCDATA )
Name of the subsection of the publication in which the resource appears. Should follow the prism:section element and precede the prism:subsection2 element (if one is given).
[v2.1] <prism:subsection2> ( #PCDATA )
Name of the subsection of the publication in which the resource appears. Should follow the prism:subsection1 element and precede the prism:subsection3 element (if one is given).
[v2.1] <prism:subsection3> ( #PCDATA )
Name of the subsection of the publication in which the resource appears. Should follow the prism:subsection2 element and precede the prism:subsection4 element (if one is given).
[v2.1] <prism:subsection4> ( #PCDATA )
Name of the subsection of the publication in which the resource appears. Should follow the prism:subsection3 element.
[v2.1] <prism:teaser> ( #PCDATA ) | <prism:teaser rdf:value="#PCDATA" ... > | <prism:teaser rdf:resource="%ResourceReference;" ... >
A short description of the resource.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:resource = "#PCDATA" | rdf:value = "#PCDATA"
- (O) prism:platform = "#PCDATA"
[v2.1] <prism:ticker rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:ticker> ( #PCDATA )
Indicates a stock ticker symbol that is the subject of the article.
[v2.1] <prism:timePeriod rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:timePeriod> ( #PCDATA )
The temporal subject of the content of the resource.
[v2.1] <prism:url rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:url> ( %ResourceReference; )
This element provides the url for an article or unit of content.
[v2.1] <prism:versionIdentifier rdf:resource="%ResourceReference;"> ( EMPTY ) | <prism:versionIdentifier> ( #PCDATA )
This element provides an additional identifier, typically used to record a specific version of a resource. Best practice is to use a version identifier that implies sequence.
[v2.1] <prism:volume> ( #PCDATA )
Additional identifier for the publication where the resource appeared, providing the Volume portion of the common Volume, Number scheme.
[v2.1] <prism:wordCount rdf:datatype="%IntegerDatatype;"> ( EMPTY ) | <prism:wordCount> ( #PCDATA )
The (approximate) count of the number of words in a textual resource.

B – PRISM Usage Rights Elements

[v2.1] <prismUsageRights:adultContentWarning> ( #PCDATA ) | <prismUsageRights:adultContentWarning rdf:value="#PCDATA" ... >
This element defines warnings that must be used in conjunction with this resource due to the presence of adult content.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA"
- (O) prismUsageRights:adultContentAge = "#PCDATA"
- (O) prismUsageRights:countryCode = "#PCDATA"
- (O) prismUsageRights:distributionChannel = "#PCDATA"
- (O) prismUsageRights:platform = "#PCDATA"
- (O) prismUsageRights:dir = "#PCDATA"
[v2.1] <prismUsageRights:agreement> ( #PCDATA ) | <prismUsageRights:agreement rdf:value="#PCDATA" ... > | <prismUsageRights:agreement rdf:resource="%ResourceReference;" ... >
Agreement is used to identify all contracts and releases.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA" | rdf:resource = "#PCDATA"
- (R) prismUsageRights:status = "#PCDATA"
- (O) prismUsageRights:agreementType = "#PCDATA"
- (O) prismUsageRights:agreementID = "#PCDATA"
- (O) prismUsageRights:dir = "#PCDATA"
[v2.1] <prismUsageRights:copyright> ( #PCDATA ) | <prismUsageRights:copyright rdf:value="#PCDATA" ... > | <prismUsageRights:copyright rdf:resource="%ResourceReference;" ... >
Copyright statement for the resource.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA" | rdf:resource = "#PCDATA"
- (O) prismUsageRights:dir = "#PCDATA"
[v2.1] <prismUsageRights:creditLine> ( #PCDATA ) | <prismUsageRights:creditLine rdf:value="#PCDATA" ... >
Used to encode the credit line for a media asset. The element indicates whether the credit is required by agreement and the distribution channel to which it applies.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA"
- (O) prismUsageRights:required = "#PCDATA"
- (O) prismUsageRights:agreementID = "#PCDATA"
- (O) prismUsageRights:distributionChannel = "#PCDATA"
- (O) prismUsageRights:dir = "#PCDATA"
[v2.1] <prismUsageRights:embargoDate> ( #PCDATA ) | <prismUsageRights:embargoDate rdf:value="#PCDATA" ... >
Earliest date (potentially including time) the resource may be made available to users or customers according to the rights agreement or to a clause in the rights agreement.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA"
- (O) prismUsageRights:distributionChannel = "#PCDATA"
[v2.1] <prismUsageRights:exclusivityEndDate> ( #PCDATA ) | <prismUsageRights:exclusivityEndDate rdf:value="#PCDATA" ... >
The date (potentially including time) when exclusive use of the resource ends according to a rights agreement.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA"
- (O) prismUsageRights:distributionChannel = "#PCDATA"
[v2.1] <prismUsageRights:expirationDate> ( #PCDATA ) | <prismUsageRights:expirationDate rdf:value="#PCDATA" ... >
The date (potentially including time) by which the resource must be removed from availability to users or customers according to a rights agreement.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA"
- (O) prismUsageRights:distributionChannel = "#PCDATA"
[v2.1] <prismUsageRights:imageSizeRestriction> ( #PCDATA ) | <prismUsageRights:imageSizeRestriction rdf:value="#PCDATA" ... > | <prismUsageRights:imageSizeRestriction rdf:resource="%ResourceReference;" ... >
Specifies the usage restriction on image size.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA" | rdf:resource = "#PCDATA"
- (O) prismUsageRights:verticalDimension = "#PCDATA"
- (O) prismUsageRights:horizontalDimension = "#PCDATA"
- (O) prismUsageRights:platform = "#PCDATA"
- (O) prismUsageRights:agreementID = "#PCDATA"
- (O) prismUsageRights:dir = "#PCDATA"
[v2.1] <prismUsageRights:optionEndDate> ( #PCDATA ) | <prismUsageRights:optionEndDate rdf:value="#PCDATA" ... >
The date (potentially including time) by which the resource must be used according to the rights agreement.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA"
- (O) prismUsageRights:distributionChannel = "#PCDATA"
[v2.1] <prismUsageRights:permissions> ( #PCDATA ) | <prismUsageRights:permissions rdf:value="#PCDATA" ... >
Specifies special usage permissions by distribution channel.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA"
- (O) prismUsageRights:code = "#PCDATA"
- (O) prismUsageRights:countryCode = "#PCDATA"
- (O) prismUsageRights:agreementID = "#PCDATA"
- (O) prismUsageRights:distributionChannel = "#PCDATA"
- (O) prismUsageRights:usageFee = "#PCDATA"
- (O) prismUsageRights:dir = "#PCDATA"
[v2.1] <prismUsageRights:restrictions> ( #PCDATA ) | <prismUsageRights:restrictions rdf:value="#PCDATA" ... >
Specifies special usage restrictions by distribution channel.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA"
- (O) prismUsageRights:code = "#PCDATA"
- (O) prismUsageRights:countryCode = "#PCDATA"
- (O) prismUsageRights:agreementID = "#PCDATA"
- (O) prismUsageRights:distributionChannel = "#PCDATA"
- (O) prismUsageRights:usageFee = "#PCDATA"
- (O) prismUsageRights:dir = "#PCDATA"
[v2.1] <prismUsageRights:resueProhibited> ( #PCDATA )
Specifies that there are no rights to reuse this resource.
[v2.1] <prismUsageRights:rightsAgent> ( #PCDATA ) | <prismUsageRights:rightsAgent rdf:value="#PCDATA" ... > | <prismUsageRights:rightsAgent rdf:resource="%ResourceReference;" ... >
Name, and possibly contact information, for the person or organization that should be contacted to license the rights to use a resource.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA" | rdf:resource = "#PCDATA"
- (O) prismUsageRights:agreementID = "#PCDATA"
- (O) prismUsageRights:dir = "#PCDATA"
[v2.1] <prismUsageRights:rightsOwner> ( #PCDATA ) | <prismUsageRights:rightsOwner rdf:value="#PCDATA" ... > | <prismUsageRights:rightsOwner rdf:resource="%ResourceReference;" ... >
Name, and possibly contact information, for the person or organization that owns the rights to use a resource. This may differ from the rights agent.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA" | rdf:resource = "#PCDATA"
- (O) prismUsageRights:agreementID = "#PCDATA"
- (O) prismUsageRights:dir = "#PCDATA"
[v2.1] <prismUsageRights:usageFee> ( #PCDATA ) | <prismUsageRights:usageFee rdf:value="#PCDATA" ... > | <prismUsageRights:usageFee rdf:resource="%ResourceReference;" ... >
Specifies fees required for usage based on distribution channel.

Attributes required (R) and optional (O) for use with attributed forms:
- (R) rdf:value = "#PCDATA" | rdf:resource = "#PCDATA"
- (O) prismUsageRights:agreementID = "#PCDATA"
- (O) prismUsageRights:dir = "#PCDATA"

Example

<?xml version="1.0" encoding="UTF-8"?>
<rdf:RDF
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns="http://purl.org/rss/1.0/"
   xmlns:content="http://purl.org/rss/1.0/modules/content/"
   xmlns:dc="http://purl.org/dc/elements/1.1/"
   xmlns:prism="http://prismstandard.org/namespaces/1.2/basic/"
>
  
<channel rdf:about="http://www.nature.com/nature/current_issue/rss">
<title>Nature</title>
<description>Nature is a weekly international journal publishing the finest peer-reviewed
 research in all fields of science and technology ...</description>
<link>http://www.nature.com/nature/current_issue/</link>
<dc:publisher>Nature Publishing Group</dc:publisher>
<dc:language>en</dc:language>
<dc:rights>© 2008 Nature Publishing Group</dc:rights>
<prism:publicationName>Nature</prism:publicationName>
<prism:issn>0028-0836</prism:issn>
<prism:eIssn>1476-4679</prism:eIssn>
<prism:copyright>© 2008 Nature Publishing Group</prism:copyright>
<prism:rightsAgent>permissions@nature.com</prism:rightsAgent>
<image rdf:resource="http://www.nature.com/includes/rj_globnavimages/nature_logo.gif"/>
<items>
<rdf:Seq>
<rdf:li rdf:resource="http://dx.doi.org/10.1038/nature07116"/>
</rdf:Seq>
</items>
</channel>
<image rdf:about="http://www.nature.com/includes/rj_globnavimages/nature_logo.gif">
<title>Nature</title>
<url>http://www.nature.com/includes/rj_globnavimages/nature_logo.gif</url>
<link>http://www.nature.com/nature/</link>
</image>
<item rdf:about="http://dx.doi.org/10.1038/nature07116">
<title>Heterogeneous chemistry in the atmosphere of Mars</title>
<link>http://dx.doi.org/10.1038/nature07116</link>
<description>Hydrogen radicals are produced in the martian atmosphere by the photolysis
 of water vapour and subsequently initiate catalytic ...</description>
<content:encoded><![CDATA[
<p>
<b>Heterogeneous chemistry in the atmosphere of Mars</b>
</p>
<p>Nature 454, 971 (2008). <a href="http://dx.doi.org/10.1038/nature07116">doi:10.1038/nature07116</a>
</p>
<p>Authors: Franck Lefèvre, Jean-Loup Bertaux, R. Todd Clancy, Thérèse Encrenaz, Kelly Fast,
 François Forget, Sébastien Lebonnois, Franck Montmessin & Séverine Perrier</p>
<p>Hydrogen radicals are produced in the martian atmosphere by the photolysis
 of water vapour and subsequently initiate catalytic ...</p>
]]></content:encoded>
<dc:title>Heterogeneous chemistry in the atmosphere of Mars</dc:title>
<dc:creator>Franck Lefèvre</dc:creator>
<dc:creator>Jean-Loup Bertaux</dc:creator>
<dc:creator>R. Todd Clancy</dc:creator>
<dc:creator>Thérèse Encrenaz</dc:creator>
<dc:creator>Kelly Fast</dc:creator>
<dc:creator>François Forget</dc:creator>
<dc:creator>Sébastien Lebonnois</dc:creator>
<dc:creator>Franck Montmessin</dc:creator>
<dc:creator>Séverine Perrier</dc:creator>
<dc:identifier>doi:10.1038/nature07116</dc:identifier>
<dc:source>Nature 454, 971 (2008)</dc:source>
<prism:publicationName>Nature</prism:publicationName>
<prism:volume>454</prism:volume>
<prism:number>7207</prism:number>
<prism:section>Letter</prism:section>
<prism:startingPage>971</prism:startingPage>
<prism:endingPage>975</prism:endingPage>
</item>
</rdf:RDF>