Key points are not available for this paper at this time.
Miloš Jakubíček, Adam Kilgarriff, Vojtěch Kovář, Pavel Rychlý, Vít Suchomel. Proceedings of the Demonstrations at the 14th Conference of the European Chapter of the Association for Computational Linguistics. 2014.
Jakubíček et al. (Wed,) studied this question.