@inproceedings{goingoutonalimbjointextractionof,
  title = {Going out on a limb: Joint Extraction of Entity Mentions and Relations without Dependency Trees},
  author = {Arzoo Katiyar and Claire Cardie},
  year = {2017},
  booktitle = {ACL 2017 7},
  url = {https://aclanthology.org/P17-1085},
}