@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},
}