input question: F: That clock is off. It's 11:30. What was said before this conversation????
output answer: M: Can that clock be right? 9:50?
W: Pretty good, Bill. How about you? M: Oh. I'm OK. How is that English class you're teaching? W: It's going really well. I have a great class this year. I've got 30 students. M: That's good. I love to teach English. I'm only teaching history now. What was said before this conversation?
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Answer: M: Good morning. Mary, how's it going?
Q: W: Could you post these letters for me on your way? What was said before this conversation?
A: M: Bye! I'm going to school.
Question: W: Yes, the doctor gave a wonderful talk. What was said before this conversation?
Answer: M: Did you listen to the talk last night?
[Q]: F: Don't bother. I'll be fine soon. What was said before this conversation?
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[A]: M: Shall I send for a doctor?
Problem: Given the question: W: Yes. But Dick speaks English better than Jack, and Bob does even better than Dick. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
M: Jack speaks English well, doesn't he?