CREATE TABLE table_21939 ("Season" TEXT, "The Mole" TEXT, "Winner" TEXT, "Runner-up" TEXT, "International destination" TEXT)

How many runner-ups were there when the show went to Japan?
SELECT COUNT("Runner-up") FROM table_21939 WHERE "International destination" = 'Japan'
SELECT COUNT("Runner-up") FROM "table_21939" WHERE "International destination" = 'Japan'