LOGICON: A System for Extracting Semantic Structure using Partial Parsing Kais Dukes author 2009-09 text Proceedings of the Student Research Workshop Irina Temnikova editor Ivelina Nikolova editor Natalia Konstantinova editor Association for Computational Linguistics Borovets, Bulgaria conference publication dukes-2009-logicon https://aclanthology.org/R09-2004/ 2009-09 18 22