user: Question: What is Year, when Competition Description is "U.S. Championships", when Rank-Final is less than 3, and when Apparatus is "All-Around"?
Columns: ['Year', 'Competition Description', 'Location', 'Apparatus', 'Rank-Final']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [2008.0, 'U.S. Championships', 'Boston', 'Floor Exercise', 3.0]
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Competition Description" = 'U.S. Championships' AND "Rank-Final" < 3.0 AND "Apparatus" = 'All-Around';