Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_24891 ( "English short name (upper/lower case)" text, "Alpha-2 code" text, "Alpha-3 code" text, "Numeric code" real, "ISO 3166-2 codes" text )

### Question ###
What is the ISO for South Sudan?

### Accurate SQL ###

SELECT "ISO 3166-2 codes" FROM table_24891 WHERE "English short name (upper/lower case)" = 'South Sudan'