Refer to the input text as context and select the correct relationship between 'Mobily' and 'Saudi Arabia' from the available options.
Options: operator, position held, brand, headquarters location

Abu Dhabi inched up 0.1 percent, although heavyweight telecommunications firm Etisalat fell 1.4 percent after posting a 40-percent drop in second-quarter profit, citing its Saudi Arabia affiliate Mobily and currency losses.
headquarters location