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.
--------
Question: Because of this , they 're usually ranked three stars and above , " Saga explained .

Answer: Original


Question: Victor shook his head in disagreement but he said nothing .

Answer: Original


Question: He was having trouble thinking , preceding sentences .

Answer:
Changed