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: " We need to do our human testing , don 't want to have any more deliveries by waiting for vaccination of a test subject .
Example Output: Changed

Example Input: The charging portion of the circuits included solar arrays , hacked into the rooftop of the bridge .
Example Output: Changed

Example Input: He rolled past tottering tobacco barns and farmhouses ; he saw scores of mistletoe in the high barren branches of oak trees just off the highway .
Example Output:
Changed