@InProceedings{liu-EtAl:2016:N16-13,
  author    = {Liu, Angli  and  Soderland, Stephen  and  Bragg, Jonathan  and  Lin, Christopher H.  and  Ling, Xiao  and  Weld, Daniel S.},
  title     = {Effective Crowd Annotation for Relation Extraction},
  booktitle = {Proceedings of the 2016 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies},
  month     = {June},
  year      = {2016},
  address   = {San Diego, California},
  publisher = {Association for Computational Linguistics},
  pages     = {897--906},
  url       = {http://www.aclweb.org/anthology/N16-1104}
}