Problem: Given the question: Tod: Ah, first of all, I put a buck in the vending machine for a seventy-five cent candy bar, and the thing got stuck here in the machine. Then, I pressed the change button [Ah, man], and nothing happened. [Wow!] Nothing came out. The dumb thing still owes me a quarter. Dean: Well, did you talk to the man at the snack bar to see if he could refund your money? Tod: Yeah, I tried that, but he said he didn't own the machine, and I'd have to call the phone number on the machine. Dean: What a bummer. Tod: Hey, I have an idea. [What?] Why don't we rock the machine back and forth until the candy bar falls? Dean: Nothing doing. I don't want to be responsible for breaking the thing, and besides, someone might call the cops. Tod: Ah, don't worry. I've done it before. Tod: Oh well. Hey, hey, tough luck. Hey, here, take my candy bar. [You mean?] Yeah, the machine and I hit it off earlier today. What was said before this conversation?
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The answer is:
Dean: Hey, man. What's up?

Problem: Given the question: M: Not much. I started exercising. W: Trying to get in shape? M: Yeah, and I need to start improving my health. W: Me, too. What are you doing besides exercising? M: That's about all. W: I think if you eat better, it will also help a lot. M: Sleep is important, too. I heard people who sleep an average of eight hours a day have less health problems. W: Looks like there are a lot of things to do to stay healthy. M: True. But I think it is worth it. When you get older, you want to be healthy and active. W: Absolutely. What was said before this conversation?
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The answer is:
W: Hi, Mike. What have you been up to?

Problem: Given the question: W: No, I missed it. What did you learn about them? M: That they glue themselves to rocks in the ocean, shortly after birth. They also stay in the same place forever. W: Right, have you ever tried removing one of those things? It would be easier to chip the rock away than to get the barnacles off. M: Exactly, and that's why scientists are trying to figure out what the barnacles glue is made of. It's considered one of the strongest adhesives in nature. W: And it would have the advantage of being able to work on wet surfaces too. M: Precisely, and because it's natural protein, it probably wouldn't be harmful to people like so many synthetic glues in use today. W: Think of all the ways doctors and dentists could use such a glue, mending broken bones, fasting false teeth. M: There could be countless uses. Scientists hope to learn soon exactly how the glue is made, so that people can make use of it. What was said before this conversation?
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The answer is:
M: Did you watch the TV special about barnacles last night?