document
prefix ex
prefix tr
// The following expression
entity(tr:WD-prov-dm-20111215, [ prov:type="document", ex:version="2" ])
// states the existence of an entity, denoted by identifier tr:WD-prov-dm-20111215, with type document and version number 2.
// The attribute ex:version is application specific, whereas the attribute type (see Section 5.7.4.4) is reserved in the PROV namespace.
endDocument