Automatic Multi-Layer Corpus Annotation for Evaluation Question Answering Methods: CBC4Kids Jochen L Leidner author Tiphaine Dalmas author Bonnie Webber author Johan Bos author Claire Grover author 2003 text Proceedings of 4th International Workshop on Linguistically Interpreted Corpora (LINC-03) at EACL 2003 conference publication leidner-etal-2003-automatic https://aclanthology.org/W03-2406/ 2003