Answer the following question: What type of details about konstantin grachev can be gathered from the following bio? Bio: konstantin nikolayevich grachev -lrb- ; born 17 april 1927 -rrb- is a retired russian sprinter . he competed at the 1956 and 1960 olympics in the 400 m and 4 400 m events , but failed to reach the finals . during his career grachev won seven soviet titles in the 400 m . after retiring from competitions he moved to dnipropetrovsk , ukraine .
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- sport - event - pb - caption - height - birth date - weight - image size - image - birth place