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: Those veins on your body aren't real, Mrs. White?

SOLUTION: Not completely Meredith. They're drawn on. I can show you how, if you'd like.

PROBLEM: If you'll just open the door for me, I'll be on my way.

SOLUTION: Look at this ghostly door. We will open it for you.

PROBLEM: Hey, I haven't seen you here in awhile. Thought you were a goner.

SOLUTION:
Yeah, I've been putting in extra hours at The Forum.