user: Question: What is the lowest fiscal year if total vehicles is 490?
Columns: ['Fiscal year', '2-car sets', '4-car sets', '6-car sets', '8-car sets', 'Total vehicles']
Types: ['real', 'real', 'real', 'real', 'real', 'real']
Sample row: [1963.0, 0.0, 15.0, 0.0, 0.0, 60.0]
SQL:

assistant: SELECT MIN("Fiscal year") FROM "Table" WHERE "Total vehicles" = 490.0;