Spurious Ambiguity and Focalization Glyn Morrill author Oriol Valentín author 2018-06 text journal article Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal morrill-valentin-2018-spurious 10.1162/COLI_a_00316 https://aclanthology.org/J18-2003/ 2018-06 44 2 285 327