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: Seconds later it exploded , sending out a spray of small metal rods .

Answer: Original


Question: " He gave me an obituary .

Answer: Changed


Question: The Ayatollah and the Rabbi waved one last time to the crowd and navigated the heart of the building .

Answer:
Changed