assertion  retraction  graph  subject          predicate        object             datatype    annotation
1          0           graph  obo:CHEBI_59059  rdfs:label       methyl isocyanate  xsd:string  
1          0           graph  obo:CHEBI_59059  oio:id           CHEBI:59059        xsd:string  
1          0           graph  obo:CHEBI_59059  rdfs:subClassOf  obo:CHEBI_53212    _IRI        
1          0           graph  obo:CHEBI_59059  rdf:type         owl:Class          _IRI