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: There will be no picnics today. The lake is closed until we find out where this water is going.

SOLUTION: Hey! I paid fifty bucks for this tour!

PROBLEM: Maybe just point at him and be like "Let's go!"?

SOLUTION: Yeah, I'm gonna signal my hands kind of like a trombone.

PROBLEM: I'm never going to say the word horse as long as I live.

SOLUTION:
Well, why would you promise that? We're at a stable. You can say horse.