LexRDF: An Approach for Representing Biomedical Ontologies in RDF Cui Tao PhD, Jyotishman Pathak PhD, Harold R. Solbrig, Wei-Qi Wei, and Christopher G. Chute MD DrPH Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN Contact email: tao.cui@mayo.edu Introduction LexRDF Examples OWL Concept, Property, and Reification OBO LexRDF LexRDF Property Link Orphanet AGROVOC Ontology Meta-Information LexRDF System Overview LexRDF Entity Summary of Conclusions Property Association OBO LexRDF Association