Dave is not blue. Dave is cold. Dave is quiet. Dave is not red. Dave is round. Dave is white. Gary is cold. Gary is furry. Gary is quiet. Gary is not red. Gary is round. Harry is blue. Harry is cold. Harry is furry. Harry is not round. Harry is white. If something is not cold then it is furry. White things are quiet. If Dave is not white then Dave is blue. If Gary is furry then Gary is not blue. If something is red and not cold then it is not white. If Gary is round and Gary is not quiet then Gary is red.
Harry is red.