user: Question: for how many federal states is the city of Lahnstein listed in the ranking?
Columns: ['Contestant', 'Place', 'Age', 'Country', 'Federal state', 'City', 'Height', 'Measurements (in cm)']
Types: ['text', 'real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Alisar Ailabouni', 1.0, 20.0, 'Austria', 'Upper Austria', 'Schalchen', '178cm (5\' 10")', '86-65-90']
SQL:

assistant: SELECT COUNT("Federal state") FROM "Table" WHERE "City" = 'Lahnstein';