assertion  retraction  graph  subject         predicate        object           datatype    annotation
1          0           graph  obo:GO_0043234  rdfs:label       protein complex  xsd:string  
1          0           graph  obo:GO_0043234  rdfs:subClassOf  COB:0000006      _IRI        
1          0           graph  obo:GO_0043234  rdf:type         owl:Class        _IRI