Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_11656578_2 (area_km²__1998_ VARCHAR, no_of_communes VARCHAR)
### Question:
What's the area of the voivodenship with 51 communes?
### Answer:
SELECT area_km²__1998_ FROM table_11656578_2 WHERE no_of_communes = 51