assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:3908     oio:id           DOID:3908  xsd:string  
1          0           graph  DOID:3907     rdfs:subClassOf  DOID:3908  _IRI        
1          0           graph  DOID:0080521  rdfs:subClassOf  DOID:3908  _IRI        
1          0           graph  DOID:3910     rdfs:subClassOf  DOID:3908  _IRI        
1          0           graph  DOID:4556     rdfs:subClassOf  DOID:3908  _IRI