TASK DEFINITION: In this task, you are given a sentence. You must judge whether a single noun or verb has been replaced with another word with the same part of speech. The inversion would result in the sentence sounding unnatural, So unnatural sentences will be considered changed. Label the instances as "Original" or "Changed" based on your judgment.
PROBLEM: ' I 'm saying nothing that will grieve me . '

SOLUTION: Changed

PROBLEM: " If we are stopped by American police forces , just pay them in cigarettes and whisky . "

SOLUTION: Original

PROBLEM: Now , the Russians back in 1962 had vehicles totally shut down during their tests , and that was before the advent of all this technology . "

SOLUTION:
Original