Task: Dialogue Generation
Input (English): F: Yesterday's lecture was excellent, right? ,M: The topic was interesting, but the lecture was much more difficult and I couldn't follow it completely.
(A) F: Why do you find that lecture interesting? (B) F: Excuse me, could you repeat the question? (C) F: Why do you find that paper hard to understand? (D) F: Why do you find that lecture long and boring?
Output (English): B