You are given an original reference as well as a system generated reference. Your task is to judge the naturaleness of the system generated reference. If the utterance could have been produced by a native speaker output 1, else output 0.

Example Input: System Reference: unfortunately 0 restaurants serve cambodian are expensive.
Original Reference: there are no expensive restaurant -s in that price range that serve cambodian food.
Example Output: 0

Example Input: System Reference: the phone number for shangri la vegetarian restaurant is 4157312548.
Original Reference: the phone number for shangri la vegetarian restaurant is 4157312548.
Example Output: 1

Example Input: System Reference: x is a chinese restaurant in the city centre.
Original Reference: x is a chinese restaurant near the centre of town.
Example Output:
1