@inproceedings{lee-luo-2016-personalized,
    title = "Personalized Exercises for Preposition Learning",
    author = "Lee, John  and
      Luo, Mengqi",
    editor = "Pradhan, Sameer  and
      Apidianaki, Marianna",
    booktitle = "Proceedings of {ACL}-2016 System Demonstrations",
    month = aug,
    year = "2016",
    address = "Berlin, Germany",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/P16-4020/",
    doi = "10.18653/v1/P16-4020",
    pages = "115--120"
}