user: Question: What is the 1st division when the 2nd division is National League?
Columns: ['Season', '1st Division', 'Relegated', '2nd Division', 'Promoted']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['NatWest Pro40', 'NatWest Pro40', 'NatWest Pro40', 'NatWest Pro40', 'NatWest Pro40']
SQL:

assistant: SELECT "1st Division" FROM "Table" WHERE "2nd Division" = 'National League';