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.

Input: Consider Input: The other students were determined to master the representative and then never use it again .

Output: Changed


Input: Consider Input: He entrusted his assessment in short order .

Output: Changed


Input: Consider Input: Helen tapped her hands against her knees , then hailed us both with a bright smile .


Output: Changed