Stochastic Definite Clause Grammars Christian Theil Have author 2009-09 text Proceedings of the International Conference RANLP-2009 Galia Angelova editor Ruslan Mitkov editor Association for Computational Linguistics Borovets, Bulgaria conference publication have-2009-stochastic https://aclanthology.org/R09-1027/ 2009-09 139 143