assertion  retraction  graph  subject    predicate            object                   datatype    annotation
1          0           graph  DOID:1496  oio:inSubset         obo:doid#NCIthesaurus    _IRI        
1          0           graph  DOID:1496  oio:id               DOID:1496                xsd:string  
1          0           graph  DOID:1496  oio:hasExactSynonym  Echinococcosis of liver  @en