user: Question: How many years where Eichstädt had a number of 939?
Columns: ['Year', 'Bötzow', 'Schwante', 'Vehlefanz', 'Neu-Vehlefanz', 'Marwitz', 'Bärenklau', 'Eichstädt']
Types: ['real', 'text', 'text', 'text', 'real', 'text', 'text', 'real']
Sample row: [2004.0, '2.785', '1.983', '1.771', 340.0, '1.407', '1.291', 942.0]
SQL:

assistant: SELECT COUNT("Year") FROM "Table" WHERE "Eichstädt" = 939.0;