Key points are not available for this paper at this time.
Francesco Barbieri, Jose Camacho-Collados, Francesco Ronzano, Luis Espinosa-Anke, Miguel Ballesteros, Valerio Basile, Viviana Patti, Horacio Saggion. Proceedings of the 12th International Workshop on Semantic Evaluation. 2018.
Barbieri et al. (Mon,) studied this question.