@inproceedings{nguyen-etal-2009-convolution,
    title = "Convolution Kernels on Constituent, Dependency and Sequential Structures for Relation Extraction",
    author = "Nguyen, Truc-Vien T.  and
      Moschitti, Alessandro  and
      Riccardi, Giuseppe",
    editor = "Koehn, Philipp  and
      Mihalcea, Rada",
    booktitle = "Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing",
    month = aug,
    year = "2009",
    address = "Singapore",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/D09-1143/",
    pages = "1378--1387"
}