University of Mannheim, Universidad Politécnica de Madrid, Universidade Federal de Pernambuco (UFPE), VU University Amsterdam - Web & Media Group, Universidad Politécnica de Madrid - Ontology Engineering Group, Universidade Federal de Pernambuco (UFPE), University of Mannheim - Data and Web Science Group, University of Economics, Prague - Department of Information and Knowledge Engineering, University of Economics, Prague - Department of Information and Knowledge Engineering, Fondazione Bruno Kessler, Institut National de Recherche en Informatique et Automatique (INRIA) - Grenoble - Rhône-Alpes and VU University Amsterdam