@inproceedings{fokkens-etal-2013-gaf,
    title = "{GAF}: A Grounded Annotation Framework for Events",
    author = "Fokkens, Antske  and
      van Erp, Marieke  and
      Vossen, Piek  and
      Tonelli, Sara  and
      van Hage, Willem Robert  and
      Serafini, Luciano  and
      Sprugnoli, Rachele  and
      Hoeksema, Jesper",
    booktitle = "Workshop on Events: Definition, Detection, Coreference, and Representation",
    month = jun,
    year = "2013",
    address = "Atlanta, Georgia",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/W13-1202",
    pages = "11--20",
}