which subsidiary of saudia serves both king abdulaziz international airport and king abdulaziz international airport ?
select distinct var_uri where brack_open dbr_Saudia dbo_subsidiary var_uri sep_dot var_uri dbo_targetAirport dbr_King_Abdulaziz_International_Airport sep_dot var_uri dbo_targetAirport dbr_King_Abdulaziz_International_Airport sep_dot brack_close