user: Question: What is district has a name of Rajnagar?
Columns: ['Constituency number', 'Name', 'Reserved for ( SC / ST /None)', 'District', 'Number of electorates (2009)']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['49', 'Chandla', 'SC', 'Chhatarpur', 164443.0]
SQL:

assistant: SELECT "District" FROM "Table" WHERE "Name" = 'Rajnagar';