Mavis Wanczyk, of Chicopee, Mass., stands by a poster of her winnings during a news conference where she claimed the $758.7 million Powerball prize at Massachusetts State Lottery headquarters, Thursday, Aug. 24, 2017, in Braintree, Mass. Officials said it is the largest single-ticket Powerball prize in U.S. history. At left is state treasurer Deb Goldberg. (AP Photo/Steven Senne)
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