user: Question: What is every value for top 5 if average start is 21.9?
Columns: ['Year', 'Starts', 'Wins', 'Top 5', 'Top 10', 'Poles', 'Avg. Start', 'Avg. Finish', 'Winnings', 'Position', 'Team(s)']
Types: ['real', 'real', 'real', 'real', 'real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1982.0, 29.0, 1.0, 5.0, 18.0, 2.0, '5.1', '12.1', '$62,839', '5th', '#28 Johnny Hayes Racing']
SQL:

assistant: SELECT "Top 5" FROM "Table" WHERE "Avg. Start" = '21.9';