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_12 ( id number, "area served" text, "city of license" text, "vc" number, "rf" number, "callsign" text, "network" text, "notes" text )

### Question ###
which city is served by the most full power stations ?

### Accurate SQL ###

SELECT "city of license" FROM table_204_12 GROUP BY "city of license" ORDER BY COUNT(*) DESC LIMIT 1