user: Question: Name the incumbent for Lost renomination Republican hold
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Alabama 1', 'Jo Bonner', 'Republican', 2002.0, 'Re-elected', 'Jo Bonner (R) 83.0% David Walter (C) 17.0%']
SQL:

assistant: SELECT "Incumbent" FROM "Table" WHERE "Result" = 'Lost renomination Republican hold';