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_17006 ( "Abbreviation" text, "Voivodeship" text, "Capital" text, "Area km\u00b2 (1998)" text, "Population (1980)" text, "No. of cities" real, "No. of communes" real )

### Question ###
How big (in km2) is the voivodenship also known by the abbreviation KN?

### Accurate SQL ###

SELECT "Area km\u00b2 (1998)" FROM table_17006 WHERE "Abbreviation" = 'kn'