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SUBMIT YOUR IDEAMy solution:
Here's my solution. It's nearly identical to the sample output, but it would have helped if a list of characters to remove would have been provided. Data cleansing and removing punctuation will remove the apostrophes. Otherwise, it seems like it would take a while to sift through the characters and determine which ones need to be removed.
Off by just a bit. I added things that were not words, but were introduced by html translation.
The unique line numbers don't match up but I think the logic still serves its purpose.