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.

Q: System Reference: what area are you looking for?
Original Reference: may i ask which area?.

A: 0
****
Q: System Reference: i regret that there are no restaurants near the tenderloin.
Original Reference: i cannot find any restaurant -s in the tenderloin area.

A: 1
****
Q: System Reference: there is a hotel called in the inn at the presidio and in the area of presidio.
Original Reference: yes. there is a hotel called inn at the presidio in the presidio area.

A:
0
****