user: Question: Which Incumbent has a Republican of Dan Mansell?
Columns: ['District', 'Incumbent', '2008 Status', 'Democratic', 'Republican']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'G.K. Butterfield', 'Re-election', 'G.K. Butterfield', 'Dean Stephens']
SQL:

assistant: SELECT "Incumbent" FROM "Table" WHERE "Republican" = 'Dan Mansell';