@inproceedings{ravichandran-etal-2003-automatic, title = "Automatic Derivation of Surface Text Patterns for a Maximum Entropy Based Question Answering System", author = "Ravichandran, Deepak and Ittycheriah, Abraham and Roukos, Salim", booktitle = "Companion Volume of the Proceedings of {HLT}-{NAACL} 2003 - Short Papers", year = "2003", url = "https://aclanthology.org/N03-2029/", pages = "85--87" }