1. School of Computer Science, University of Murcia (UM), Spain
2. Biological Informatics Group, Centre for Plant Biotechnology and Genomics (CBGP), Technical University of Madrid (UPM), Spain
3. Ontology Engineering Group (OEG), School of Computer Science, Technical University of Madrid (UPM), Spain
4. iSOCO, Avda. Partenón 16-18, 28042, Madrid, Spain