text: 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, abbreviation VARCHAR)
  ### Question:
  How big (in km2) is the voivodenship also known by the abbreviation KN?
  ### Answer:
  SELECT area_km²__1998_ FROM table_11656578_2 WHERE abbreviation = "kn"