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: Wait a minute, this used to be a library.

SOLUTION: It did. It used to be a library, but no more. It was my favorite place to be in this town.

PROBLEM: Chuck, I'm going to do it. I'm just going to ask Mr. Crimp for a raise.

SOLUTION: Hey, it's almost 2014, anything's possible!

PROBLEM: Sir, we really should get you to your speaking engagement.

SOLUTION:
No, I know Jeff, but listen, I gotta deal with these people and it's going to take a long time.