user: ### NOW ANSWER:
Question: What district has 213 constituents?
Columns: ['Constituency No.', 'Vidhan Sabha Constituency', 'Reservation for SC/ST', 'District', 'Lok Sabha']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [201.0, 'Dumraon (Vidhan Sabha constituency)', 'None', 'Buxar', '33 Buxar']
SQL:

assistant: SELECT COUNT("District") FROM "Table" WHERE "Constituency No." = 213.0;