@InProceedings{nagata-sakaguchi:2016:P16-1,
  author    = {Nagata, Ryo  and  Sakaguchi, Keisuke},
  title     = {Phrase Structure Annotation and Parsing for Learner English},
  booktitle = {Proceedings of the 54th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)},
  month     = {August},
  year      = {2016},
  address   = {Berlin, Germany},
  publisher = {Association for Computational Linguistics},
  pages     = {1837--1847},
  url       = {http://www.aclweb.org/anthology/P16-1173}
}