Entailment, intensionality and text understanding
We argue that determining relations of entailment and contradiction between texts is a minimal metric for the evaluation of text understanding systems. We point out that widespread intensionality in natural language poses difficulties for the determination of such relations, and propose a layered architecture for dealing with them.
Condoravdi, C.; Crouch, R.; de Paiva, V.; Stolle, R.; Bobrow, D. G. Entailment, intensionality and text understanding. Workshop on Text Meaning; 2003 May 31; Edmonton; Canada.