user: Question: what's the incumbent with result being New seat Republican gain
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['California 2', 'Harry Lane Englebright', 'Republican', '1926', 'Re-elected', 'Harry Lane Englebright (R) Unopposed']
SQL:

assistant: SELECT "Incumbent" FROM "Table" WHERE "Result" = 'New seat Republican gain';