Bob is green. Dave is round. Dave is rough. Dave is cold. Eric is round. Eric is big. Harry is young. Harry is round. Harry is rough. Harry is kind. Harry is blue. If someone is rough then they are young. If someone is kind and red and cold then they are big. If someone is rough and red then they are cold. If someone is blue and kind and young then they are red. If someone is kind and round and nice then they are rough. If someone is round and nice then they are rough. If someone is green and big and blue then they are young.
Dave is young.