CREATE TABLE table_12647 ("Year" FLOAT, "Champion" CLOB, "Runner-Up" CLOB, "Score" CLOB, "Venue" CLOB)

What champion has north melbourne as the runner-up?
SELECT "Champion" FROM table_12647 WHERE "Runner-Up" = 'north melbourne'
SELECT "Champion" FROM "table_12647" WHERE "Runner-Up" = 'north melbourne'