Bob is big. Bob is blue. Bob is cold. Bob is rough. Bob is round. Bob is white. Dave is big. Dave is rough. Dave is round. Dave is white. Harry is blue. Harry is cold. Harry is furry. Harry is rough. Harry is white. If something is blue and cold then it is rough. All furry things are big. All furry, rough things are big. All big, cold things are blue. All cold, blue things are furry. If something is white then it is cold. If something is blue then it is furry. All furry things are round.
Harry is not white.