user: Question: Which Democratic incumbent is from the district of Ohio 7?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Ohio 1', 'Benjamin Butterworth', 'Republican', '1884', 'Re-elected']
SQL:

assistant: SELECT "Incumbent" FROM "Table" WHERE "Party" = 'Democratic' AND "District" = 'Ohio 7';