@inproceedings{lin-etal-2006-side,
    title = "Which Side are You on? Identifying Perspectives at the Document and Sentence Levels",
    author = "Lin, Wei-Hao  and
      Wilson, Theresa  and
      Wiebe, Janyce  and
      Hauptmann, Alexander",
    booktitle = "Proceedings of the Tenth Conference on Computational Natural Language Learning ({C}o{NLL}-X)",
    month = jun,
    year = "2006",
    address = "New York City",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/W06-2915",
    pages = "109--116",
}