premise: Two men holding a Chinese lantern that's yellow and red, one man has a drill and the other is smiling. hypothesis: A man and his daughter build a doghouse while the dog sits behind them.
contradiction: There have to be two men or one man and his daughter and cannot be both.  Either they are holding a Chinese lantern, or they are building a doghouse.|contradiction: men doesn't mean man and daughter.|contradiction: Two men cannot be a man and his daughter.