instruction:
Given the prompt and a response, classify the them to "yes" if response is "yes, and" type. Otherwise classify it as "no". "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...'. 
question:
Prompt: I thought that instead of talking when you're giving directions, you sing. We are backstage at the Grand Ole Opry. 
 Response: That's true. I never get to sing on stage because of my horrendous voice.
answer:
yes


question:
Prompt: Hold on a second. The stairs are gone. They were here before you got here. 
 Response: Well, I'm not some kind of stair witch. I don't get rid of stairs.
answer:
yes


question:
Prompt: Look at that idiot up there telling us about gateway drugs and slippery slopes. 
 Response: Yeah, but you know what? It wasn't that great to begin with.
answer:

no