A. Jatowt, C. Au Yeung, and K. Tanaka. Proceedings of the 22Nd ACM International Conference on Conference on Information &\#38; Knowledge Management, page 2273--2278. New York, NY, USA, ACM, (2013)
J. Strötgen, and M. Gertz. Proceedings of the 5th International Workshop on Semantic Evaluation, page 321--324. Stroudsburg, PA, USA, Association for Computational Linguistics, (2010)