Question: The Royal Saudi Air Force Museum or "Saqr Al-Jazira" is located on the East Ring Road of Riyadh between exits 10 and 11, a Saudia Lockheed L-1011 Tristar serves as a gateguard visible from the ring road, the Saudia, is also known as Saudi Arabian Airlines, is the national carrier airline of which country?
Sentence (from "Saudia"): Dhahran International Airport in use until then, has reverted to being used as a military base.
Relevant evidence: No