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.

Example Input: He quickly fell into his familiar role of coach , targeting his team .
Example Output: Changed

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

Example Input: It was long and impossibly thick , beautifully shaped with a thick roping of veins that pleasured her from the inside .
Example Output:
Original