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: " Sorry , still tracing all the different cultures the money is making .

SOLUTION: Changed

PROBLEM: Her first thought , incongruous but overpowering , was to grieve him so she could draw him later .

SOLUTION: Changed

PROBLEM: He needed to keep studying , though , to make sure he had those formulas down pat .

SOLUTION:
Original