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_23449363_1 ( leagues_entering_at_this_round VARCHAR, round VARCHAR )

### Question ###
Which leagues entered an extra preliminary round?

### Accurate SQL ###

SELECT leagues_entering_at_this_round FROM table_23449363_1 WHERE round = "Extra Preliminary round"