user: Question: If the population is 1858, what is the maximum ansi code?
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: ['Galesburg', 'Traill', 83.0, '34.880', '0.088', '47.275052', '-97.377726', 3809729020.0, 1036686.0]
SQL:

assistant: SELECT MAX("ANSI code") FROM "Table" WHERE "Pop. (2010)" = 1858.0;