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From CNN:
CLINTON, Maryland (AP) -- William Coates, believed to be the oldest man in the United States, died Monday at age 114.
Coates died with two of his children and a granddaughter at his side.
Even at age 110, Coates was still charming the ladies during Prince George's County's annual celebration of centenarians.
"He really lit up every single party and event that we had for the seniors," said Irving Smith, director of the Evelyn Cole Senior Center in Seat Pleasant, who has done extensive research on centenarians...
https://www.cnn.com/2004/US/South/02/25/old...t.ap/index.html
What did they say it was that attributed to him living so long? What is the average life expectancy of humans?