Han2020More.md

@article{han2020more,
  title={More Data, More Relations, More Context and More Openness: A Review and Outlook for Relation Extraction},
  author={Han, Xu and Gao, Tianyu and Lin, Yankai and Peng, Hao and Yang, Yaoliang and Xiao, Chaojun and Liu, Zhiyuan and Li, Peng and Sun, Maosong and Zhou, Jie},
  journal={arXiv preprint arXiv:2004.03186},
  year={2020}
}