Is this Sentence Difficult? Do you Agree? Dominique Brunato author Lorenzo De Mattei author Felice Dell’Orletta author Benedetta Iavarone author Giulia Venturi author 2018-oct-nov text Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing Ellen Riloff editor David Chiang editor Julia Hockenmaier editor Jun’ichi Tsujii editor Association for Computational Linguistics Brussels, Belgium conference publication brunato-etal-2018-sentence 10.18653/v1/D18-1289 https://aclanthology.org/D18-1289/ 2018-oct-nov 2690 2699