|"There are plenty of eye-witness accounts. Just because you're so narrow-minded you need to have everything shoved under your nose before you–"
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In 1995, Harry Potter asked Neville Longbottom if there was some sort of Tibetan Turnip that would allow him to breathe underwater for an hour, in order to compete in the Second Task of the Triwizard Tournament. As he was being somewhat facetious, it is unlikely any such magical plant actually exists.
- Harry Potter and the Goblet of Fire (film) (Mentioned only)