input question: W: But mum, I'm washing clothes. My dad is free. What was said before this conversation????
output answer: M: Please pass me the salt.

input 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????
output answer: M: Did you watch the TV special about barnacles last night?

input question: M: No, I'm not. I'm interested in some hats. W: All our hats are in this section. What do you think of this one here? It's made of cotton. M: Hmm,it looks nice and is suitable for autumn, but I'd like to have something warm for winter. W: Maybe you would like a heavy wool hat. How about this one? M: I think that's what I want. How much is it? W: It's seventy dollars plus tax. M: It's a little expensive. Do you think it's possible to get a discount? W: Hmm, since you like it so much, how about a 10 percent discount. That's the best I can offer. M: That's good. Could you wrap it up for me? W: Sure. Is there anything else I can get for you? M: I also want to have a red wool sweater. But there are only black and green ones. What was said before this conversation????
output answer: W: Hi, are you being helped?

input question: M: Well, we have quite a few choices here: pottery, postcards with our local scenery, hand-made woolen hats and over there some food. W: These hats look very beautiful! How much are they? M: Forty-five dollars each or eighty dollars for the pair. W: OK. I'll take the red one. What was said before this conversation????
output answer:
W: Excuse me. I am looking for something local or special here as gifts. Could you give me some suggestions?