@inproceedings{gast-etal-2015-annotating,
    title = "Annotating modals with {G}raph{A}nno, a configurable lightweight tool for multi-level annotation",
    author = "Gast, Volker  and
      Bierkandt, Lennart  and
      Rzymski, Christoph",
    booktitle = "Proceedings of the Workshop on Models for Modality Annotation",
    month = apr,
    year = "2015",
    address = "London, UK",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-emnlp/W15-0303/"
}