Host Alex Trebek said Rebecca Rosenthal, a sophomore at Swarthmore College, "owned the game" before the correct answer to the final question was revealed.
Her parents watched the live show from home in Ridgewood, NorthJersey.com said.
Her father said he wasn't surprised she won, as she's been doing quiz bowl since she was a student at Benjamin Franklin Middle School. She was later captain of her team at Bergen County Academies, he said.
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