@InProceedings{Vannellaetal:14, author = {Vannella, Daniele and Jurgens, David and Scarfini, Daniele and Toscani, Domenico and Navigli, Roberto}, title = {Validating and Extending Semantic Knowledge Bases using Video Games with a Purpose}, booktitle = {Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (ACL 2014)}, year = {2014}, address = {Baltimore, Maryland}, publisher = {Association for Computational Linguistics}, pages = {1294--1304}, }