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: what area are you looking for?
Original Reference: what area were you looking for?.
Example Output: 0

Example Input: System Reference: fresca, is in the pacific heights or hayes valley area and it is address is 2114 fillmore street.
Original Reference: fresca is in the pacific heights or hayes valley area. the address is 2114 fillmore street.
Example Output: 1

Example Input: System Reference: there are 239 restaurants in any price range.
Original Reference: there are 239 restaurant -s that fall within any price range.
Example Output:
1