1. Instituto Universitário de Lisboa (ISCTE-IUL), CIS-IUL, and Group on Artificial Intelligence for People and Society, GAIPS, from INESC-ID, Lisbon, Portugal
2. Northeastern University, College of Computer and Information Science, Boston, MA, USA
3. Instituto Superior Técnico, Universidade de Lisboa, and Group on Artificial Intelligence for People and Society, GAIPS, from INESC-ID, Porto Salvo, Portugal
4. Department of Information Technology, Uppsala University, Uppsala, Sweden