@inproceedings{higherorderlexicalsemanticmodelsfornon,
  title = {Higher-order Lexical Semantic Models for Non-factoid Answer Reranking},
  author = {Daniel Fried and Peter Jansen and Gustave Hahn-Powell and Mihai Surdeanu and Peter Clark},
  year = {2015},
  booktitle = {TACL 2015 1},
  url = {https://aclanthology.org/Q15-1015},
}