CREATE TABLE table_1056 ("Stage" FLOAT, "Winner" TEXT, "General classification" TEXT, "Points classification" TEXT, "Mountains classification" TEXT, "Young rider classification" TEXT, "Team classification" TEXT, "Combativity award" TEXT)

Who led the points classification when Roman Kreuziger led the young rider classification?
SELECT "Points classification" FROM table_1056 WHERE "Young rider classification" = 'Roman Kreuziger'
SELECT "Points classification" FROM "table_1056" WHERE "Young rider classification" = 'Roman Kreuziger'