@inproceedings{ijcai2005p234,
  title     = {The Necessity of Syntactic Parsing for Semantic Role Labeling},
  author    = {Punyakanok, Vasin and Roth, Dan and Yih, Wen-tau},
  booktitle = {Proceedings of the Nineteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-05}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  pages     = {1117--1122},
  year      = {2005},
  url       = {https://ijcai.org/proceedings/2005/234},
}