CREATE TABLE table_65939 ("Time" TEXT, "Athlete" TEXT, "Nationality" TEXT, "Location of race" TEXT, "Date" TEXT)

What's the nationality of Ray norton with a time of 20.6?
SELECT "Nationality" FROM table_65939 WHERE "Time" = '20.6' AND "Athlete" = 'ray norton'
SELECT "Nationality" FROM "table_65939" WHERE "Athlete" = 'ray norton' AND "Time" = '20.6'