Tweet Extraction for News Production Considering Unreality Yuka Takei author Taro Miyazaki author Ichiro Yamada author Jun Goto author 2017-11 text Proceedings of the 31st Pacific Asia Conference on Language, Information and Computation Rachel Edita Roxas editor The National University (Phillippines) conference publication takei-etal-2017-tweet https://aclanthology.org/Y17-1049/ 2017-11 370 375