user: Question: What shows for opened for the NASCAR Major Series?
Columns: ['Track', 'City', 'State', 'Opened', 'Major Series', 'Turns']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Baltimore', 'Baltimore', 'Maryland', '2011', 'IndyCar , ALMS', '15']
SQL:

assistant: SELECT "Opened" FROM "Table" WHERE "Major Series" = 'NASCAR';