Object-Extraction and Question-Parsing using CCG Stephen Clark author Mark Steedman author James R Curran author 2004-07 text Proceedings of the 2004 Conference on Empirical Methods in Natural Language Processing Dekang Lin editor Dekai Wu editor Association for Computational Linguistics Barcelona, Spain conference publication clark-etal-2004-object https://aclanthology.org/W04-3215/ 2004-07 111 118