Does negation really matter? Ira Goldstein author Özlem Uzuner author 2010-07 text Proceedings of the Workshop on Negation and Speculation in Natural Language Processing Roser Morante editor Caroline Sporleder editor University of Antwerp Uppsala, Sweden conference publication goldstein-uzuner-2010-negation https://aclanthology.org/W10-3104/ 2010-07 23 27