1. Graduate School of Informatics, Osaka Metropolitan University, Japan
2. ETH Zurich, Switzerland
3. German Research Center for Artificial Intelligence (DFKI), Germany and University of Kaiserslautern, Germany
4. School of Computing and Information Systems, University of Melbourne, Australia
5. LISN-CNRS, France
6. Smart Data & Knowledge Services, German Research Center for Artificial Intelligence (DFKI), Germany and Knowledge Based Systems, University of Kaiserslautern, Germany
7. Paris-Sorbonne University, France and LISN-CNRS, France