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: I'm so sorry for your loss. Grandfather was great woman, I'm told.

SOLUTION: Yes, Grandfather was the love of my life.

PROBLEM: You don't really have any medical training or anything?

SOLUTION:
No, I just hand out forms for people to see and then I lead kids back to the examining rooms.