assertion  retraction  graph  subject             predicate        object              datatype    annotation
1          0           graph  obo:UBERON_0000948  rdfs:label       heart               xsd:string  
1          0           graph  obo:UBERON_0000948  oio:id           UBERON:0000948      xsd:string  
1          0           graph  obo:UBERON_0000948  rdfs:subClassOf  obo:UBERON_0010314  _IRI        
1          0           graph  obo:UBERON_0000948  rdfs:subClassOf  obo:UBERON_0007100  _IRI        
1          0           graph  obo:UBERON_0000948  rdfs:subClassOf  obo:UBERON_0005181  _IRI        
1          0           graph  obo:UBERON_0000948  rdfs:subClassOf  obo:UBERON_0004120  _IRI        
1          0           graph  obo:UBERON_0000948  rdf:type         owl:Class           _IRI