TASK DEFINITION: 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.
PROBLEM: System Reference: what price range are you comfortable with?
Original Reference: what is the price range?.

SOLUTION: 1

PROBLEM: System Reference: may i ask near where?
Original Reference: where are looking for a hotel.

SOLUTION: 0

PROBLEM: System Reference: x is a contemporary english restaurant in x.
Original Reference: x is a restaurant in x serving both english food and contemporary food.

SOLUTION:
1