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_68123 ( "Sport" text, "Competition name" text, "Competing entities" text, "Age groups" text, "Held every" text )

### Question ###
What are the age groups for the Big League World Series?

### Accurate SQL ###

SELECT "Age groups" FROM table_68123 WHERE "Competition name" = 'big league world series'