user: Question: What is the number of 2011 passengers in millions that have traveled a distance of 1271km?
Columns: ['Rank', 'City 1', 'City 2', '2012 Passengers (in millions)', '2011 Passengers (in millions)', 'Distance']
Types: ['real', 'text', 'text', 'real', 'text', 'text']
Sample row: [1.0, 'Seoul', 'Jeju', 10.156, '9.9', '450km']
SQL:

assistant: SELECT "2011 Passengers (in millions)" FROM "Table" WHERE "Distance" = '1271km';