user: Question: What was the total number of aircrafts in 2011 for sydney airport that was ranked number 1?
Columns: ['Rank', 'Airport', 'Location', '2011', '2010', '2009']
Types: ['real', 'text', 'text', 'real', 'real', 'real']
Sample row: [1.0, 'Sydney Airport', 'Sydney , New South Wales', 310918.0, 304938.0, 287480.0]
SQL:

assistant: SELECT SUM("2011") FROM "Table" WHERE "Airport" = 'sydney airport' AND "Rank" < 1.0;