assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:1703  rdfs:subClassOf  DOID:1040  _IRI        
1          0           graph  DOID:1039  rdfs:subClassOf  DOID:1040  _IRI        
1          0           graph  DOID:285   rdfs:subClassOf  DOID:1040  _IRI        
1          0           graph  DOID:6354  rdfs:subClassOf  DOID:1040  _IRI        
1          0           graph  DOID:1040  oio:id           DOID:1040  xsd:string