@article{answerinteractioninnonfactoidquestion,
  title = {Answer Interaction in Non-factoid Question Answering Systems},
  author = {Chen Qu and Liu Yang and Bruce Croft and Falk Scholer and Yongfeng Zhang},
  year = {2019},
  eprint = {1901.03491},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1901.03491v2},
}