CREATE TABLE table_204_694 (id DECIMAL, "year" TEXT, "name" TEXT, "date" TEXT, "stages" DECIMAL, "distance" TEXT, "winner" TEXT, "time" TEXT)

who is listed before wong kam po ?
SELECT "winner" FROM table_204_694 WHERE id = (SELECT id FROM table_204_694 WHERE "winner" = 'wong kam-po') - 1
SELECT "winner" FROM "table_204_694" WHERE "id" = (SELECT "id" FROM "table_204_694" WHERE "winner" = 'wong kam-po') - 1