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 area are you looking for?
Original Reference: which area do you want?.

SOLUTION: 0

PROBLEM: System Reference: x is a restaurant in x and x.
Original Reference: x is a restaurant near x and x.

SOLUTION: 1

PROBLEM: System Reference: what type of food would you like to eat?
Original Reference: what type of food do you have in mind?.

SOLUTION:
1