CREATE TABLE table_10236830_4 (actors_name VARCHAR, nomination VARCHAR, country VARCHAR)

Which actor from Serbia was nominated for best actor in a supporting role?
SELECT actors_name FROM table_10236830_4 WHERE nomination = "Best Actor in a Supporting Role" AND country = "Serbia"
SELECT "actors_name" FROM "table_10236830_4" WHERE "Best Actor in a Supporting Role" = "nomination" AND "Serbia" = "country"