Dave is quiet. Dave is round. Dave is smart. Dave is young. Erin is smart. Fiona is smart. Fiona is young. Harry is nice. Harry is smart. Harry is young. If something is not red then it is not kind. If something is not red then it is quiet. If Harry is young and Harry is red then Harry is smart. If something is young then it is round. If something is not round and not smart then it is nice. If Dave is not round then Dave is kind. If Harry is not round then Harry is quiet. If something is red and not quiet then it is not young.
Dave is not nice.