Complex Lexico-syntactic Reformulation of Sentences Using Typed Dependency Representations Advaith Siddharthan 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 siddharthan-2010-complex https://aclanthology.org/W10-4213/ 2010-07