Bob is big. Bob is cold. Bob is furry. Bob is nice. Bob is quiet. Bob is rough. Charlie is blue. Charlie is furry. Charlie is quiet. Dave is big. Dave is blue. Dave is furry. Dave is nice. Dave is quiet. Dave is rough. If something is big and cold then it is blue. If Bob is cold then Bob is rough. If Dave is cold then Dave is quiet. Blue, cold things are nice. All quiet, nice things are big. If something is rough and cold then it is blue. If Charlie is nice then Charlie is big. If something is big then it is rough.
Dave is blue.