@article{doubleretrievalandrankingforaccurate,
  title = {Double Retrieval and Ranking for Accurate Question Answering},
  author = {Zeyu Zhang and Thuy Vu and Alessandro Moschitti},
  year = {2022},
  eprint = {2201.05981},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2201.05981v1},
}