assertion  retraction  graph  subject    predicate        object    datatype    annotation
1          0           graph  DOID:3856  rdfs:subClassOf  DOID:193  _IRI        
1          0           graph  DOID:120   rdfs:subClassOf  DOID:193  _IRI        
1          0           graph  DOID:193   oio:id           DOID:193  xsd:string  
1          0           graph  DOID:192   rdfs:subClassOf  DOID:193  _IRI