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: It was an old heavy building , built of devastation and stone , that looked like it had grown slowly up from the forest floor .

SOLUTION: Changed

PROBLEM: " I 'm not worried about my legs , " he said , " but I don 't want to be paralysed all my life . "

SOLUTION: Original

PROBLEM: I can disguise us to look like natives . "

SOLUTION:
Original