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.

You 've certainly learnt a lesson , the submarine will be very interested in you . "
Changed

A hard lecturing , and it was taking Marian longer to recover .
Changed

I don 't like deceiving her but it 's safer that way . '

Original