TASK DEFINITION: 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.
PROBLEM: Before I could tell them to stop , Romeo launched himself forward and used Braeden as some kind of launching pad .

SOLUTION: Original

PROBLEM: In the end , she had caused the very fate she had tried so hard to coax .

SOLUTION: Changed

PROBLEM: We have followed all the environmental norms and have obtained all the necessary certifications .

SOLUTION:
Original