[PAR] [TLE] Clay Center, Kansas [SEP] Clay Center is a city in and the county seat of Clay County, Kansas, United States.  As of the 2010 census, the city population was 4,334. [PAR] [TLE] Ken Swenson [SEP] Kenneth Lloyd "Ken" Swenson (born April 18, 1948 in Clay Center, Kansas) is a retired middle-distance runner from the United States.  Swenson was the world leader at 800 meters in 1970 and competed in the 1972 Summer Olympics in Munich.
[PAR] [TLE] Clay Center , Kansas [ SEP ] Clay Center is a city in and the county seat of Clay County , Kansas , United States . As of the 2010 census , the city population was 4,334 . [PAR] [TLE] Ken Swenson [ SEP ] Kenneth Lloyd " Ken " Swenson ( born April 18 , 1948 in Clay Center , Kansas ) is a retired middle - distance runner from the United States . Swenson was the world leader at 800 meters in 1970 and competed in the 1972 Summer Olympics in Munich .
In what race was a Clay County, Kansas native world leader in 1970?
In what race was a Clay County , Kansas native world leader in 1970 ?
800 meters
800 meters