CREATE TABLE table_57047 ("Event" TEXT, "Record" TEXT, "Athlete" TEXT, "Nationality" TEXT, "Date" TEXT)

What was the nationality of the athlete that ran the 10000 m event?
SELECT "Nationality" FROM table_57047 WHERE "Event" = '10000 m'
SELECT "Nationality" FROM "table_57047" WHERE "Event" = '10000 m'