“…In discourse analysis, context refers to the information that surrounds a sentence and determines its meaning, and includes a broad range of information such as the speaker's knowledge, beliefs, facial expressions, gestures, and social circumstance, and culture. Hatori et al (2006) suggested a discourse analysis based on facet theory. In this method, utterances in a debate are decomposed into three conceptual units (hereafter called "facets")-"what" should be solved, "how" it should be solved, and "why" it should be solved, in order to effectively examine interest conflict and cognitive dissonance among debate participants.…”