[['municipality', 'inhabitants', 'mayor', 'party', 'election'], ['trento', '116298', 'alessandro andreatta', 'democratic party', '2009'], ['rovereto', '38167', 'andrea miorandi', 'democratic party', '2010'], ['pergine valsugana', '20582', 'silvano corradi', 'union for trentino', '2009'], ['arco', '16901', 'paolo mattei', 'democratic party', '2010'], ['riva del garda', '16170', 'adalberto mosaner', 'democratic party', '2010']]
all 5 Municipality in the Südtirol region held Election either in 2009 or 2010
all 5 [ENT] in the [ENT] region held [ENT] either in [ENT] or [ENT]