p3p#Dynamic.clickstream.timestamp.ymd.year__dynamic__year  year
  supertype:  UnstructuredDataElement  A data element with no component parts
     supertype:  DataElement  A specific item of data a service might collect
        supertype:  P3P_thing
           supertype:  thing_categorized_in_an_ontology
              supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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