assertion  retraction  graph  subject              predicate        object               datatype  annotation
1          0           graph  obo:FOODON_00001015  rdfs:label       plant food product   @en       
1          0           graph  obo:FOODON_00001015  rdfs:subClassOf  obo:FOODON_00002403  _IRI      
1          0           graph  obo:FOODON_00001015  rdf:type         owl:Class            _IRI