Dave is green. Fiona is furry. Gary is furry. If Fiona is green then Fiona is not nice. If something is green and nice then it is not smart. All smart things are green. If something is not nice and not big then it is smart. If something is smart and young then it is not nice. If something is not smart and not quiet then it is not furry. If something is not green then it is furry. If something is green and not furry then it is young.
Dave is big.