@Book{CoNLL:2017,
  editor    = {Roger Levy  and  Lucia Specia},
  title     = {Proceedings of the 21st Conference on Computational Natural Language Learning (CoNLL 2017)},
  month     = {August},
  year      = {2017},
  address   = {Vancouver, Canada},
  publisher = {Association for Computational Linguistics},
  url       = {http://aclweb.org/anthology/K17-1}
}