user: ### NOW ANSWER:
Question: What was Andretti's finish the year he started 16th with a Buick engine?
Columns: ['Year', 'Chassis', 'Engine', 'Start', 'Finish']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1990.0, 'Lola', 'Cosworth', 'Failed to Qualify', 'Failed to Qualify']
SQL:

assistant: SELECT "Finish" FROM "Table" WHERE "Engine" = 'Buick' AND "Start" = '16th';