Aditya Kalyanpur J. William Murdock James Fan Christopher A. Welty Leveraging Community-Built Knowledge for Type Coercion in Question Answering. 144-156 2011 International Semantic Web Conference (2) http://dx.doi.org/10.1007/978-3-642-25093-4_10 conf/semweb/2011-2 db/conf/semweb/iswc2011-2.html#KalyanpurMFW11