user: Question: What is the number of students in Fall 09 from the state that had 3940 in Fall 07?
Columns: ['States', 'Fall 05', 'Fall 06', 'Fall 07', 'Fall 08', 'Fall 09']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Maryland', 3864.0, 3821.0, 3940.0, 4182.0, 4330.0]
SQL:

assistant: SELECT "Fall 09" FROM "Table" WHERE "Fall 07" = 3940.0;