What type of details about ollie schriver  can be gathered from the following bio?  Bio: oliver `` ollie '' martin schriver -lrb- december 17 , 1879 -- june 28 , 1947 -rrb- was an american gunnery sergeant , sports shooter and olympic champion . he won three gold medals at the 1920 summer olympics in antwerp . he was born in washington , d. c.
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