Argumentation Mining in User-Generated Web Discourse Ivan Habernal author Iryna Gurevych author 2017-04 text journal article Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal habernal-gurevych-2017-argumentation 10.1162/COLI_a_00276 https://aclanthology.org/J17-1004/ 2017-04 43 1 125 179