... SystemProcessing textual entailment, or recognizingwhether the information expressed in a text can beinferred from the information expressed in anothertext, can be performed in four ways. ... Morarescu. 2001. The Role of Lexico-Semantic Feedback in Open-Domain Textual Question-Answering. In Proceed-ings of the 39th Meeting of the Association for Com-putational Linguistics.S. Harabagiu, ... asked in natural language. In the quest for producing accurate answers, the open-domainQ/A problem has been cast as: (1) a pipeline of linguistic processes pertaining to the processing of questions,...