Covering a sentence in form and meaning with fewer retrieved sentences Yuan Liu author Yves Lepage author 2021-11 text Proceedings of the 35th Pacific Asia Conference on Language, Information and Computation Kaibao Hu editor Jong-Bok Kim editor Chengqing Zong editor Emmanuele Chersoni editor Association for Computational Lingustics Shanghai, China conference publication liu-lepage-2021-covering https://aclanthology.org/2021.paclic-1.54/ 2021-11 513 522