assertion  retraction  graph  subject     predicate        object     datatype    annotation
1          0           graph  DOID:5391   rdfs:subClassOf  DOID:3906  _IRI        
1          0           graph  DOID:3906   oio:id           DOID:3906  xsd:string  
1          0           graph  DOID:10183  rdfs:subClassOf  DOID:3906  _IRI        
1          0           graph  DOID:8003   rdfs:subClassOf  DOID:3906  _IRI