Bob is not quiet. Bob is round. Bob is young. Fiona is not round. Gary is not rough. Gary is round. Gary is young. If something is quiet then it is young. All green things are not rough. Rough, round things are not furry. If something is green then it is round. All rough things are green. If something is not round and not rough then it is not young. If something is young and not green then it is furry. If Fiona is quiet and Fiona is not round then Fiona is smart.
Gary is smart.