PHLIQA 1: Multilevel Semantics in Question Answering P Medema author W J Bronnenberg author H C Bunt author S P J Landsbergen author R J H Scha author W J Schoenmakers author E P C van Utteren author 1975-11 text journal article American Journal of Computational Linguistics continuing periodical academic journal Microfiche 32 medema-etal-1975-phliqa https://aclanthology.org/J75-4014/ 1975-11 72 86