Charlie is big. Charlie is smart. Charlie is young. Fiona is big. Fiona is furry. Fiona is green. Fiona is nice. Fiona is young. Gary is big. Gary is green. Gary is nice. Gary is quiet. If something is furry then it is young. If something is green and big then it is smart. Big things are green. If Gary is smart and Gary is big then Gary is furry. Big, nice things are smart. If something is furry and smart then it is young.
Gary is not young.