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_57096 ( "car plates (since 1937)" text, "Voivodeship Separate city" text, "Capital" text, "Area in 1000km\u00b2 (1930)" text, "Population in 1000 (1931)" text )

### Question ###
tell me the name of the capital with an area of 20,4.

### Accurate SQL ###

SELECT "Capital" FROM table_57096 WHERE "Area in 1000km\u00b2 (1930)" = '20,4'