Sean MacAvaney author Arman Cohan author Nazli Goharian author 2017-08 text Steven Bethard editor Marine Carpuat editor Marianna Apidianaki editor Saif M Mohammad editor Daniel Cer editor David Jurgens editor Association for Computational Linguistics Vancouver, Canada conference publication macavaney-etal-2017-guir 10.18653/v1/S17-2180 https://aclanthology.org/S17-2180/ 2017-08 1024 1029