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: " Okay , maybe a thousand , " the man said quickly , backtracking .

Output: Original


Input: Consider Input: Her cupboards were abruptly halted when Cole walked into the kitchen , trailed by her son .

Output: Changed


Input: Consider Input: Just as the unspeakable pain was beginning to subside , he felt the teeth digging into his thigh , and the pain returned , worse than before .


Output: Original