user: Question: What province has the largest city of Birjand?
Columns: ['Province', 'Largest city', '2nd Largest', '3rd Largest', '4th largest']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Tehran', 'Tehran', 'Eslamshahr', 'Golestan', 'Shahr-e Qods']
SQL:

assistant: SELECT "Province" FROM "Table" WHERE "Largest city" = 'Birjand';