@article{fahlman-1980-netl,
    title = "{NETL}: A System for Representing and Using Real-World Knowledge",
    author = "Fahlman, Scott E.",
    journal = "American Journal of Computational Linguistics",
    volume = "6",
    number = "3-4",
    year = "1980",
    url = "https://preview.aclanthology.org/fix-sig-urls/J80-3004/"
}