@InProceedings{song-EtAl:2018:EMNLP,
  author    = {Song, Linfeng  and  Zhang, Yue  and  Wang, Zhiguo  and  Gildea, Daniel},
  title     = {N-ary Relation Extraction using Graph-State LSTM},
  booktitle = {Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing},
  month     = {October-November},
  year      = {2018},
  address   = {Brussels, Belgium},
  publisher = {Association for Computational Linguistics},
  pages     = {2226--2235},
  url       = {http://www.aclweb.org/anthology/D18-1246}
}