ChEBI
Chemical Entities of Biological Interest , also known as ChEBI , is a chemical database and ontology of molecular entities focused on 'small' chemical compounds , that is part of the Open Biomedical Ontologies ( OBO ) effort at the European Bioinformatics Institute ( EBI ) . 
<triplet> ChEBI <subj> chemical database <obj> instance of <subj> ontology <obj> instance of <subj> European Bioinformatics Institute <obj> publisher