user: Question: How big is the land in square miles of Grand Forks county?
Columns: ['Township', 'County', 'Pop. (2010)', 'Land ( sqmi )', 'Water (sqmi)', 'Latitude', 'Longitude', 'GEO ID', 'ANSI code']
Types: ['text', 'text', 'real', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Jackson', 'Sargent', 33.0, '35.809', '0.000', '46.066276', '-97.945530', 3808140460.0, 1036797.0]
SQL:

assistant: SELECT "Land ( sqmi )" FROM "Table" WHERE "County" = 'Grand Forks';