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: unfortunately 0 restaurants serve afghan for lunch.
Original Reference: there are 0 restaurant -s that are good for lunch and serve afghan food.

SOLUTION: 1

PROBLEM: System Reference: the inn on castro is located in the castro area.
Original Reference: there is the inn on castro in the castro neighborhood.

SOLUTION: 0

PROBLEM: System Reference: x is an italian restaurant in the city centre area near x, and x.
Original Reference: x is an italian restaurant located near x and x in the city centre.

SOLUTION:
1