OBO Relations Ontology
From semanticweb.org
An ontology consisting of foundational relations. Developed for the biological and biomedical domain, but the core relations are applicable to multiple domains
website: http://obo.sourceforge.net/relationship
See also Smith B, Ceusters W, Klagges B, Kohler J, Kumar A, Lomax J, Mungall CJ, Neuhaus F, Rector A, Rosse C (2004) Relations in Biomedical Ontologies.Genome Biology, 2005 http://genomebiology.com/2005/6/5/R46
This ontology is part of OBO and the OBO Foundry
The ontology defines relations such as Property:Is a Property:part_of Property:located_in
