user
Given a cartoon image and a caption. Caption: My wife won't let me put one in the back yard. Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
Couples sometimes argue about whether or not they should add a pool to the backyard. Here, the wife said no, so instead of giving up on the pool, the husband put one in their home office. Technically, it's not in the back yard, so the husband didn't disobey his wife's request.