assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_37407  rdfs:label       cyclic ether     xsd:string  
1          0           graph  obo:CHEBI_37407  oio:id           CHEBI:37407      xsd:string  
1          0           graph  obo:CHEBI_37407  rdfs:subClassOf  obo:CHEBI_38104  _IRI        
1          0           graph  obo:CHEBI_37407  rdfs:subClassOf  obo:CHEBI_25698  _IRI        
1          0           graph  obo:CHEBI_37407  rdf:type         owl:Class        _IRI