@inproceedings{askingclarificationquestionsinknowledge,
  title = {Asking Clarification Questions in Knowledge-Based Question Answering},
  author = {Jingjing Xu and Yuechen Wang and Duyu Tang and Nan Duan and Pengcheng Yang and Qi Zeng and Ming Zhou and Xu sun},
  year = {2019},
  booktitle = {IJCNLP 2019 11},
  url = {https://aclanthology.org/D19-1172},
}