Dave is blue. Fiona is nice. Fiona is rough. Fiona is white. Fiona is young. Gary is nice. Gary is rough. Harry is not blue. Harry is nice. Harry is quiet. Harry is white. Harry is young. If something is rough then it is young. All blue things are big. Rough things are big. All rough, quiet things are not big. If something is rough then it is nice. If Gary is quiet then Gary is not young. All rough, nice things are blue. If something is white and not young then it is blue.
Harry is not big.