1. LORIA/INRIA Nancy – Grand Est, 615 rue du Jardin Botanique, 54602 Villers-lès-Nancy, France. philippe.degroote@loria.fr; sylvain.pogodalla@loria.fr
2. The Ohio State University, 202 Oxley Hall Columbus, OH 43210, United States. pollard@ling.ohio-state.edu