Information:  - Qatar Amiri Flight is a VIP airline owned and operated by the government of Qatar . It operates worldwide charters on demand and caters exclusively to the royal family of Qatar and other VIP government staff . The vast majority of its fleet is painted in the standard livery of the commercial flag carrier of Qatar , Qatar Airways .  - Hamad International Airport ("") is the international airport of Doha, the capital city of Qatar. It replaced the former Doha International Airport as Qatar's principal airport.  - Qatar Airways Company Q.C.S.C. ("Al Qatariyah"), operating as Qatar Airways, is the state-owned flag carrier of Qatar. Headquartered in the Qatar Airways Tower in Doha, the airline operates a hub-and-spoke network, linking over 150 international destinations across Africa, Central Asia, Europe, Far East, South Asia, Middle East, North America, South America and Oceania from its base at Hamad International Airport, using a fleet of more than 180 aircraft.    After reading the paragraphs above, we are interested in knowing the entity with which 'qatar amiri flight' exhibits the relationship of 'airline hub'. Find the answer from the choices below.  Choices: - doha international airport  - hamad international airport
A:
doha international airport