assertion  retraction  graph  subject          predicate        object                datatype    annotation
1          0           graph  obo:CHEBI_47022  rdfs:label       tetrahydrofurandione  xsd:string  
1          0           graph  obo:CHEBI_47022  oio:id           CHEBI:47022           xsd:string  
1          0           graph  obo:CHEBI_47022  rdfs:subClassOf  obo:CHEBI_47016       _IRI        
1          0           graph  obo:CHEBI_47022  rdf:type         owl:Class             _IRI