1. University of Leipzig, Institute of Computer Science, AKSW Group, Augustusplatz 10, D-04009 Leipzig, Germany. E-mail: {lehmann,kontokostas,hellmann,morsey,auer}@informatik.uni-leipzig.de
2. Brox IT-Solutions GmbH, An der Breiten Wiese 9, D-30625 Hannover, Germany. E-mail: mail@robertisele.com
3. Neofonie GmbH, Robert-Koch-Platz 4, D-10115 Berlin, Germany. E-mail: max.jakob@neofonie.de
4. Hasso-Plattner-Institute for IT-Systems Engineering, Prof.-Dr.-Helmert-Str. 2-3, D-14482 Potsdam, Germany. E-mail: mail@anjajentzsch.de
5. Kno.e.sis – Ohio Center of Excellence in Knowledge-enabled Computing, Wright State University, Dayton, USA. E-mail: pablo@knoesis.org
6. OpenLink Software, 10 Burlington Mall Road, Suite 265, Burlington, MA 01803, USA. E-mail: pkleef@openlinksw.com
7. Enterprise Information Systems, Universität Bonn & Fraunhofer IAIS, Römerstraße 164, D-53117 Bonn, Germany. E-mail: auer@cs.uni-bonn.de
8. University of Mannheim, Research Group Data and Web Science, B6-26, D-68159 Mannheim, Germany. E-mail: chris@informatik.uni-mannheim.de