Graphs and Spatial Relations in the Generation of Referring Expressions Jette Viethen author Margaret Mitchell author Emiel Krahmer author 2013-08 text Proceedings of the 14th European Workshop on Natural Language Generation Albert Gatt editor Horacio Saggion editor Association for Computational Linguistics Sofia, Bulgaria conference publication viethen-etal-2013-graphs https://aclanthology.org/W13-2108/ 2013-08 72 81