Alessandro Agostini Paolo Avesani On the Discovery of the Semantic Context of Queries by Game-Playing. 203-216 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3055&spage=203 2004 conf/fqas/2004 FQAS db/conf/fqas/fqas2004.html#AgostiniA04