Conceptual Coherence in the Generation of Referring Expressions Albert Gatt author Kees van Deemter author 2006-07 text Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions Association for Computational Linguistics Sydney, Australia conference publication gatt-van-deemter-2006-conceptual https://aclanthology.org/P06-2033/ 2006-07 255 262