list the significant buildings of the arch . whose one of the important work is 2012 g-20 los cabos summit ?
SELECT DISTINCT var_uri where brack_open var_x dbo_significantBuilding dbr_2012_G-20_Los_Cabos_summit sep_dot var_x dbo_significantBuilding var_uri sep_dot var_x a dbo_Architect brack_close