assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_18059  rdfs:label       lipid            xsd:string  
1          0           graph  obo:CHEBI_18059  oio:id           CHEBI:18059      xsd:string  
1          0           graph  obo:CHEBI_18059  rdfs:subClassOf  obo:CHEBI_50860  _IRI        
1          0           graph  obo:CHEBI_18059  rdf:type         owl:Class        _IRI