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_24141 ( "Rank" real, "Commodity" text, "Value (Int $1000)" real, "Production (MT)" real, "Quantity world rank" text, "Value world rank" text )

### Question ###
where value world rank is 12, what is the quantity world rank?

### Accurate SQL ###

SELECT "Quantity world rank" FROM table_24141 WHERE "Value world rank" = '12'