assertion  retraction  graph  subject            predicate    object                   datatype    annotation
1          0           graph  oio:creation_date  IAO:0000115  Date class was created.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://www.geneontology.org/formats/oboInOwl#creation_date""}]}"
1          0           graph  oio:creation_date  rdfs:label   creation_date            xsd:string  
1          0           graph  oio:creation_date  rdf:type     owl:AnnotationProperty   _IRI