user: Question: I want the sum of stories for Guadalajara done after 2007
Columns: ['Rank', 'City', 'Height', 'Stories', 'Completed']
Types: ['text', 'text', 'text', 'real', 'real']
Sample row: ['1', 'Mexico City', 'm (ft)', 55.0, 2003.0]
SQL:

assistant: SELECT SUM("Stories") FROM "Table" WHERE "City" = 'Guadalajara' AND "Completed" > 2007.0;