user: Question: How many times did the team with an average start of 18.9 make the top 10?
Columns: ['Year', 'Starts', 'Wins', 'Top 5', 'Top 10', 'Poles', 'Avg. Start', 'Avg. Finish', 'Winnings', 'Position', 'Team(s)']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'text', 'text', 'text']
Sample row: ['2002', 6.0, 1.0, 1.0, 2.0, 0.0, 7.0, 18.5, '$717,942', '46th', 'Chip Gannasi Racing']
SQL:

assistant: SELECT "Top 10" FROM "Table" WHERE "Avg. Start" = 18.9;