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_204_778 ( id number, "code" number, "county" text, "former province" text, "area (km2)" number, "population\ncensus 2009" number, "capital" text )

### Question ###
which county has the most area ?

### Accurate SQL ###

SELECT "county" FROM table_204_778 ORDER BY "area (km2)" DESC LIMIT 1