Machine Comprehension of natural language text is a fundamental challenge in AI and it has received significant attention throughout the history of AI (Greene, 1959;McCarthy, 1976;Reiter, 1976;Winograd, 1980).
in natural language processing (NLP) it has been studied under various settings, such as multiplechoice Question-Answering (QA) (Green Jr. et al., 1961), Reading Comprehension (RC) (Hirschman et al., 1999), Recognizing Textual Entailment (RTE) (Dagan et al., 2013) etc.