CREATE TABLE table_44262 ("Stage  ( Winner ) " TEXT, "General Classification" TEXT, "Young Classification" TEXT, "Sprint Classification" TEXT, "Aggressive Rider" TEXT, "Team Classification" TEXT)

Which young classification has an aggressive rider of Tim Johnson?
SELECT "Young Classification" FROM table_44262 WHERE "Aggressive Rider" = 'tim johnson'
SELECT "Young Classification" FROM "table_44262" WHERE "Aggressive Rider" = 'tim johnson'