@inproceedings{de-palma-1992-riddles,
    title = "Riddles: Accessibility and Knowledge Representation",
    author = "De Palma, Paul",
    booktitle = "{COLING} 1992 Volume 4: The 14th {I}nternational {C}onference on {C}omputational {L}inguistics",
    year = "1992",
    url = "https://preview.aclanthology.org/Author-Pages-WenzhengZhang-ZhengyanShi-ShuYang/C92-4176/"
}