Grouping Axioms for More Coherent Ontology Descriptions Sandra Williams author Richard Power author 2010-07 text Proceedings of the 6th International Natural Language Generation Conference John Kelleher editor Brian Mac Namee editor Ielka van der Sluis editor Association for Computational Linguistics conference publication williams-power-2010-grouping https://aclanthology.org/W10-4222/ 2010-07