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.

It was titled : Riddle of the Pink Pyjamas The writing was hard to make out .
Original

The cook tossed the biscuit at John , hitting him in the chest with it .
Original

He grabbed the reins tightly , let out an Indian war whoop , and whipped Samson 's flanks with the leather bracelets .

Changed