https://arxiv.org/abs/1812.09355 https://arxiv.org/abs/1812.09359
somewhat related work: http://aclweb.org/anthology/W18-5426
https://arxiv.org/abs/1812.09355 https://arxiv.org/abs/1812.09359
somewhat related work: http://aclweb.org/anthology/W18-5426