Problem: Given the question: M: They must confuse me with my brother, Jack. Anyway, he is feeling better now. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
W: Hi, John, haven't seen you for a quite few days. I heard you've been sick. How are you feeling now?

Problem: Given the question: W: Yes. They will leave at 11 o'clock. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
M: The students will get to the museum at 9:30, won't they?

Problem: Given the question: W: Hello, Professor Webster. This is Janet Hill calling. I live two doors down from your teaching assistant, Don Williams. Don asked me to call you because he's lost his voice and can't talk to you himself. M: Lost his voice? That's too bad. Is there anything I can do for him? W: Well, he has a class this afternoon from 2:30 to 4:00, and he won't be able to make it. M: Does he want me to try to find somebody else to teach it? W: No, not exactly. What he wants to do is to get someone to go in for him-just to pass back the mid term exam papers. He's already marked them. And they're on the desk in his office. The whole thing wouldn't take more than...Oh, ten minutes or so. M: 2:30, you say? Well, I'm free then, and I am going there anyway, so I could do it for him. Where's his class? W: Carter Hall, Room 214. Will you need his office key to get the exams? I could bring it to you. M: Well, actually, that won't be necessary. We have a master key in the Maths Department, so I can get into his office. W: Thank you, Professor Webster. M: My pleasure. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
M: Maths Department, Dr Webster speaking.