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.

[EX Q]: System Reference: may i ask near where?
Original Reference: i did not understand. what part of the city would you like me to search?.
[EX A]: 0

[EX Q]: System Reference: piperade, is in the hayes valley or telegraph hill area and it is address is 1015 battery street.
Original Reference: piperade is in the area of hayes valley or telegraph hill. its address is 1015 battery street.
[EX A]: 0

[EX Q]: System Reference: where is it near?
Original Reference: what location are you looking in?.
[EX A]:
1