@inproceedings{xu2015semeval,
  author    = {Wei Xu and Chris Callison-Burch and William B. Dolan},
  title     = {{SemEval-2015 Task} 1: Paraphrase and Semantic Similarity in {Twitter} ({PIT})},
  booktitle = {Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval)},
  year      = {2015}
}