{
  "@prefix" : {
    "" : "<http://example.org/yads-schema-2002-04-03#>" ,
    "dc" : "<http://purl.org/dc/elements/1.1/>" ,
    "xsd" : "<http://www.w3.org/2001/XMLSchema#>"
  } ,
  "resource" : "<http://example.org/_cc_r.map>" ,
  "collection" : [
    {
      "collection" : [
        {
          "collection" : [
            {
              "resource" : "<http://example.org/a>"
            } ,
            {
              "resource" : "<http://example.org/b>"
            }
          ]
        } ,
        {
          "resource" : "<http://example.org/c>"
        }
      ]
    }
  ]
}