@inproceedings{grishman-sterling-1990-information,
    title = "Information Extraction and Semantic Constraints",
    author = "Grishman, Ralph  and
      Sterling, John",
    booktitle = "{COLING} 1990 Volume 3: Papers presented to the 13th International Conference on Computational Linguistics",
    year = "1990",
    url = "https://aclanthology.org/C90-3071/"
}