Some Pragmatic Issues in the Planning of Definite and Indefinite Noun Phrases Douglas E Appelt author 1985-07 text 23rd Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Chicago, Illinois, USA conference publication appelt-1985-pragmatic 10.3115/981210.981235 https://aclanthology.org/P85-1025/ 1985-07 198 203