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: i am sorry. i did not find any expensive restaurants in outer richmond.
Original Reference: there are no restaurant -s in the outer richmond area in the expensive price range.
Example Output: 0

Example Input: System Reference: stroganoff restaurant near fishermans wharf offers cheap food.
Original Reference: stroganoff restaurant is a cheap restaurant near fishermans wharf.
Example Output: 1

Example Input: System Reference: the address of source is 11 division street and the phone number is 4158649000.
Original Reference: the address for source is 11 division street and the phone number is 4158649000.
Example Output:
0