1. Department of Knowledge Engineering, Maastricht University, PO Box 616, Maastricht, The Netherlands
2. Delft Center for Systems and Control, Delft University of Technology, Mekelweg 2, Delft, The Netherlands
3. Department of Computer Science, University of Oxford, Wolfson Building, Parks Road, Oxford, UK
4. Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
5. Department of Mathematics and Theoretical Informatics, Technical University Košice, Košice, Slovakia