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: Sorry I'm late.  Did I miss much of the tour?

SOLUTION: Yeah, well, you missed the sprinkles over there.  That's Felix.  He's my dad.

PROBLEM: Alright, just keep this ticket on your windshield and you're free to drive into the park. Oh, it's just you and a dummy in your car?

SOLUTION: That's right. It's Michael Jackson, the ventriloquist dummy made out of mummies.

PROBLEM: I have to say for a rat to hold three pounds is pretty impressive.

SOLUTION:
That's what I'm saying. Just because he can do that, he thinks he's the greatest rat to walk the earth.