Syntactic and Semantic Structure for Opinion Expression Detection Richard Johansson author Alessandro Moschitti author 2010-07 text Proceedings of the Fourteenth Conference on Computational Natural Language Learning Mirella Lapata editor Anoop Sarkar editor Association for Computational Linguistics Uppsala, Sweden conference publication johansson-moschitti-2010-syntactic https://aclanthology.org/W10-2910/ 2010-07 67 76