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_2201 ( "Index (Year)" text, "Author / Editor / Source" text, "Year of publication" text, "Countries sampled" real, "World Ranking (1)" text, "Ranking L.A. (2)" text )

### Question ###
How many countries were sampled for the index in 2nd place in the LA ranking and 23rd in the world ranking?

### Accurate SQL ###

SELECT "Countries sampled" FROM table_2201 WHERE "Ranking L.A. (2)" = '2nd' AND "World Ranking (1)" = '23rd'