@Book{Tutorials:2015,
  editor    = {Yang Liu  and  Thamar Solorio},
  title     = {Proceedings of the 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Tutorial Abstracts},
  month     = {May--June},
  year      = {2015},
  address   = {Denver, Colorado},
  publisher = {Association for Computational Linguistics},
  url       = {http://www.aclweb.org/anthology/N15-4}
}