Qualitatively Describing Objects Using Spatial Prepositions
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\begin{bibtex} @inproceedings{DBLP:conf/aaai/AbellaK93, title={Qualitatively Describing Objects Using Spatial Prepositions}, pages={536-540}, year={1993}, booktitle={AAAI}, url={http://www.informatik.uni-trier.de/~ley/db/conf/aaai/aaai93.html#AbellaK93}, author={Alicia Abella and John R. Kender} }\end{bibtex}
