@inproceedings{bird-etal-2001-annotation,
    title = "Annotation Tools Based on the Annotation Graph {API}",
    author = "Bird, Steven  and
      Maeda, Kazuaki  and
      Ma, Xiaoyi  and
      Lee, Haejoong",
    booktitle = "Proceedings of the {ACL} 2001 Workshop on Sharing Tools and Resources",
    year = "2001",
    url = "https://preview.aclanthology.org/fix-sig-urls/W01-1515/"
}