http://purl.org/obo/owl/SO#SO_0000673
http://www.loria.fr/~coulet/ontology/snpontology/version1.6/snpontology_full.owl#transcript
http://www.loria.fr/~coulet/ontology/snpontology/version1.6/snpontology_full.owl#transcript_region
http://purl.org/obo/owl/SO#SO_0000833