Bob is nice. Bob is cold. Bob is blue. Dave is red. Dave is big. Gary is rough. Gary is red. Gary is nice. Harry is rough. Harry is blue. If someone is red and blue then they are nice. If someone is rough then they are young. If someone is cold and big then they are rough. If someone is young and round and green then they are red. If someone is round and blue then they are cold. If someone is cold and nice then they are big. If someone is kind and cold and red then they are nice.
Dave is not nice.