Definition: "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..."). Given a prompt and two responses, identify which response is the type of "yes, and". Indicate your answer by 'Response 1' if the first response is correct, otherwise 'Response 2'.  Note that a "Yes, and" does not require someone explicitly saying 'yes, and...' as part of a dialogue exchange.
Input: Prompt: Okay, so I bet if we just pop this door open - I mean, it couldn't be that there are thirty hungry zombies waiting on the other side of the door. 
 Response 1: Sometimes a sick pig lives inside of us. If we fix ourselves, the pig will fix itself. 
 Response 2: I doubt it. We've been in here for ten minutes, I'm sure they left.

Response 2