assertion  retraction  graph  subject              predicate        object                     datatype  annotation
1          0           graph  obo:FOODON_00001151  rdfs:label       citrus fruit food product  @en       
1          0           graph  obo:FOODON_00001151  rdfs:subClassOf  obo:FOODON_00001057        _IRI      
1          0           graph  obo:FOODON_00001151  rdf:type         owl:Class                  _IRI