user: Question: Which Incumbent has a District of California 8?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['California 1', 'James Gillett', 'Republican', 1902.0, 'Ran for governor Republican hold']
SQL:

assistant: SELECT "Incumbent" FROM "Table" WHERE "District" = 'California 8';