user: Question: Who was the candidate in 1791?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['North Carolina 1', 'Joseph McDowell', 'Anti-Administration', 1793.0, 'Lost re-election Democratic-Republican hold', 'James Holland (DR) Joseph McDowell (DR)']
SQL:

assistant: SELECT "Candidates" FROM "Table" WHERE "First elected" = 1791.0;