user: Question: What is the earliest year a Chairman who took office after 2011 is up for reelection?
Columns: ['Name', 'Position', 'Party', 'Took office', 'Up for reelection']
Types: ['text', 'text', 'text', 'real', 'real']
Sample row: ['Phil Mendelson', 'Chairman', 'Democratic', 2012.0, 2014.0]
SQL:

assistant: SELECT MIN("Up for reelection") FROM "Table" WHERE "Took office" > 2011.0 AND "Position" = 'Chairman';