@inproceedings{chen-etal-2012-prefer, title = "{PREFER}: Using a Graph-Based Approach to Generate Paraphrases for Language Learning", author = "Chen, Mei-Hua and Huang, Shi-Ting and Huang, Chung-Chi and Liou, Hsien-Chin and Chang, Jason S.", editor = "Tetreault, Joel and Burstein, Jill and Leacock, Claudia", booktitle = "Proceedings of the Seventh Workshop on Building Educational Applications Using {NLP}", month = jun, year = "2012", address = "Montr{\'e}al, Canada", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/W12-2009/", pages = "80--85" }