Question: What ethnic group had the largest population in сурдук in 2002?
Schema: create table table_2562572_53 (largest_ethnic_group__2002_ varchar, cyrillic_name varchar, PRIMARY KEY (largest_ethnic_group__2002_))
SQL: select largest_ethnic_group__2002_ from table_2562572_53 where cyrillic_name = "сурдук"