Utilize the input text as a context reference, choose the right relationship between 'Tunisair' and 'Tunis' from the options.
Options: headquarters location, distribution format, brand, chairperson

Tunis — Tunisair will take delivery on August 24 of its new Airbus A330-200 thus bringing the number of its fleet to 30 aircraft, the national carrier announced in a recent press release.
headquarters location