@inproceedings{doweknowwhatwedontknowstudying,
  title = {Do We Know What We Don’t Know? Studying Unanswerable Questions beyond SQuAD 2.0},
  author = {Elior Sulem and Jamaal Hay and Dan Roth},
  year = {2021},
  booktitle = {Findings (EMNLP) 2021 11},
  url = {https://aclanthology.org/2021.findings-emnlp.385},
}