user: Question: Name the team for avg start being 20.5
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: [1986.0, 2.0, 0.0, 0.0, 0.0, 0.0, '21.0', '29.0', '$535', '110th', '#31 Grissom Racing Enterprises']
SQL:

assistant: SELECT "Team(s)" FROM "Table" WHERE "Avg. Start" = '20.5';