Dan Tufis Dan Stefanescu Radu Ion Alexandru Ceausu RACAI's Question Answering System at QA@CLEF2007. 284-291 2007 CLEF http://dx.doi.org/10.1007/978-3-540-85760-0_34 conf/clef/2007 db/conf/clef/clef2007.html#TufisSIC07