@inproceedings{BosCurranGuzzetti2007TREC, title = {The Pronto QA system at TREC-2007: harvesting hyponyms, using nominalisation patterns, and computing answer cardinality}, author = {Bos, Johan and Curran, James R. and Guzzetti, Edoardo}, booktitle = {The Sixteenth Text RETrieval Conference, TREC 2007}, editor = {Voorhees, E. M. and Buckland, L. P.}, address = {Gaitersburg, MD}, pages = {726--732}, year = {2007} }