assertion  retraction  graph  subject             predicate        object                datatype    annotation
1          0           graph  obo:UBERON_0000061  rdfs:label       anatomical structure  xsd:string  
1          0           graph  obo:UBERON_0000061  oio:id           UBERON:0000061        xsd:string  
1          0           graph  obo:UBERON_0000061  rdfs:subClassOf  obo:UBERON_0000465    _IRI        
1          0           graph  obo:UBERON_0000061  rdf:type         owl:Class             _IRI