@misc{pandya2021question,
  title={Question Answering Survey: Directions, Challenges, Datasets, Evaluation Matrices},
  author={Hariom A. Pandya and Brijesh S. Bhatt},
  year={2021},
  eprint={2112.03572},
  archivePrefix={arXiv},
  primaryClass={cs.CL},
  url={https://arxiv.org/abs/2112.03572}
}