Charlie is furry. Charlie is nice. Charlie is rough. Charlie is smart. Charlie is not white. Charlie is young. Dave is white. Fiona is big. Fiona is nice. Fiona is rough. Fiona is white. Gary is nice. Gary is rough. Gary is smart. Gary is white. If Gary is white and Gary is not smart then Gary is rough. If something is furry then it is nice. All rough, white things are big. If something is furry and not white then it is young. If Charlie is big and Charlie is rough then Charlie is smart. If something is nice and smart then it is furry. If something is not white and not big then it is rough. If something is white and not furry then it is rough.
Dave is smart.