assertion  retraction  graph  subject              predicate        object                   datatype  annotation
1          0           graph  obo:FOODON_00002161  rdfs:label       plum fruit food product  @en       
1          0           graph  obo:FOODON_00002161  rdfs:subClassOf  obo:FOODON_00002277      _IRI      
1          0           graph  obo:FOODON_00002161  rdf:type         owl:Class                _IRI