user: Question: Name the 2 car sets for 622 
Columns: ['Fiscal year', '2-car sets', '3-car sets', '4-car sets', '6-car sets', '8-car sets', 'Total vehicles']
Types: ['real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [2005.0, 70.0, 10.0, 40.0, 46.0, 12.0, 702.0]
SQL:

assistant: SELECT "2-car sets" FROM "Table" WHERE "Total vehicles" = 622.0;