assertion  retraction  graph  subject              predicate        object                   datatype  annotation
1          0           graph  obo:FOODON_00001792  rdfs:label       crustacean food product  @en       
1          0           graph  obo:FOODON_00001792  rdfs:subClassOf  obo:FOODON_00001293      _IRI      
1          0           graph  obo:FOODON_00001792  rdf:type         owl:Class                _IRI