user: Question: What is the nation of citizenship for athletes later than 2011 year of award?
Columns: ['Year of award', 'Athlete', 'Nation of citizenship', 'Team', 'Competition , governing body , or league', 'Sport']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [2001.0, 'Pete Sampras', 'United States', 'not applicable', 'ATP Tour', 'Tennis']
SQL:

assistant: SELECT "Nation of citizenship" FROM "Table" WHERE "Year of award" > 2011.0;