assertion  retraction  graph  subject             predicate        object              datatype    annotation
1          0           graph  obo:UBERON_0000479  rdfs:label       tissue              xsd:string  
1          0           graph  obo:UBERON_0000479  oio:id           UBERON:0000479      xsd:string  
1          0           graph  obo:UBERON_0000479  rdfs:subClassOf  obo:UBERON_0010000  _IRI        
1          0           graph  obo:UBERON_0000479  rdf:type         owl:Class           _IRI