@article{liang2020using,
  title={Using the Hammer Only on Nails: A Hybrid Method for Evidence Retrieval for Question Answering},
  author={Liang, Zhengzhong and Zhao, Yiyun and Surdeanu, Mihai},
  journal={arXiv preprint arXiv:2009.10791},
  url = "https://arxiv.org/abs/2009.10791",
  year={2020}
}

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