Table 3. Current statistics on the data contained in the used cross-product files.

HPO and MPO files downloaded from http://code.google.com/p/phenotype-ontologies. Behaviour files downloaded from http://code.google.com/p/behavior-ontology. GO-xp file downloaded from http://obofoundry.org/cgi-bin/detail.cgi?id=biological_process_xp_uber_anatomy.

Ontology	File	Number of classes defined
HPO logical definitions	hp-equivalence-axioms.obo	4,666
MPO logical definitions	mp-equivalence-axioms.obo	7,278
GO logical definitions using Uberon	biological_process_xp_uber_anatomy.obo	1,484
Behavior xp	behavior_xp.obo	104