What type of details about zigmas jukna can be gathered from the following bio? Bio: zigmas pranciskus jukna -lrb- 13 july 1935 -- 7 october 1980 -rrb- was a lithuanian rower . he competed for the soviet union at the 1960 , 1964 and 1968 summer olympics , and finished in second , fifth and third place in the coxed pairs , eights and eights events , respectively . between 1961 and 1969 he won three gold and five silver medals at european and world championships . starting from 1971 he worked as a judge with the international rowing federation . in 1962 jukna graduated from the lithuanian university of educational sciences . he was married to irena jukna , also a competitive rower ; they had a son . in the late 1970s jukna was diagnosed with a brain tumor and died in 1980 after two operations .
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