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: Your job is delivering the mail, obviously, but also, is to be a rock, for your siblings. Your siblings, they look to you. You know, all of your siblings are dealing with substance abuse problems. 
 Response 1: Oh, yeah. I'm the only one. 
 Response 2: Thanks. Do you have a piece of paper where I might copy your signature? Practice it?

Response 1