1. Department of Computer Science, Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Mexico
2. Symanto Research, Nuremberg, Germany
3. Department of Information Technologies, Language and Reasoning Research Group, Universidad Autónoma Metropolitana, Unidad Cuajimalpa (UAM-C), Mexico
4. PRHLT Research Center, Universitat Politècnica de València, Spain