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1. One of these 4 songs is correct.
2. One of these doctors isn't a real doctor and hasn't written literature or a book of any kind.
3. One of these Mobsters protested about not having an expiry date on drinks.
4. One of the rules isn't a rule.
5. One of these country or countries was the actors for Harry Potter only Allowed to be from.
6. One of these is the inventor of the Radio-Hat?.
7. One of these cities is named after a person.