Dave is blue. Dave is round. Dave is smart. Fiona is blue. Fiona is furry. Fiona is quiet. Fiona is round. Gary is blue. Gary is quiet. Gary is smart. Harry is furry. Harry is green. Harry is quiet. Harry is rough. Harry is round. Harry is smart. All rough things are blue. Furry, green things are smart. If Gary is blue and Gary is furry then Gary is round. All blue things are green. Blue, green things are quiet. Rough things are blue.
Gary is not round.