user: Question: What was the start of the competitor with a qualifying time of 84.300?
Columns: ['Year', 'Start', 'Qual', 'Rank', 'Finish', 'Laps']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['1913', '7', '86.030', '3', '1', 200.0]
SQL:

assistant: SELECT "Start" FROM "Table" WHERE "Qual" = '84.300';