user: Question: What district for Charlie Oliver of the 2012 commission?
Columns: ['District', '2012 Commission', '2010 Commission', '2007 Commission', '2002 Commission', '1999 Commission']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['District 1', 'Gloria Moon', 'Gloria Moon', 'Katie Jones', 'Katie Jones', 'Jean Birmingham']
SQL:

assistant: SELECT "District" FROM "Table" WHERE "2012 Commission" = 'Charlie Oliver';