user: Question: Name the number of first elected for Kentucky 3
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Kentucky 1', 'Matthew Lyon', 'Democratic-Republican', '1796 1803', 'Re-elected', 'Matthew Lyon (DR) Anthony New (DR)']
SQL:

assistant: SELECT "First elected" FROM "Table" WHERE "District" = 'Kentucky 3';