TASK DEFINITION: Given the sentence, generate "yes, and" response. "Yes, and" is a rule-of-thumb in improvisational comedy that suggests that a participant in a dialogue should accept what another participant has stated ("Yes") and then expand on that line of thought or context ("and..."). 1 In short, a "Yes, and" is a dialogue exchange in which a speaker responds by adding new information on top of the information/setting that was constructed by another speaker. Note that a "Yes, and" does not require someone explicitly saying 'yes, and...' as part of a dialogue exchange, although it could be the case if it agrees with the description above. There are many ways in which a response could implicitly/explicitly agree to the prompt without specifically saying 'yes, and...'. 
PROBLEM: I feel like we have so much in common. Do you guys want to go to lunch?

SOLUTION: Well, we'd love to have lunch, but we're getting ready to see Hamilton.

PROBLEM: Also, can we also get two cups of water? We'll only be drinking water. If it says H2O on the cup, that's all we're allowed to drink and that's what we will drink.

SOLUTION: Do you think I haven't seen this before? I'm a restaurant-our, OK? I have a guy who escorts you to the soda fountain. Big Tom. He's going to walk you over to the soda fountain. They can only have water.

PROBLEM: What concert were you here for, before?

SOLUTION:
I was here for a Boys II Men concert. They were having a reunion.