Annotating Targets of Opinions in Arabic using Crowdsourcing Noura Farra author Kathy McKeown author Nizar Habash author 2015-07 text Proceedings of the Second Workshop on Arabic Natural Language Processing Nizar Habash editor Stephan Vogel editor Kareem Darwish editor Association for Computational Linguistics Beijing, China conference publication farra-etal-2015-annotating 10.18653/v1/W15-3210 https://aclanthology.org/W15-3210/ 2015-07 89 98