Question: Riga International serves as a base airport for a Hungarian airline whose head office is in what city?
Sentence (from "Riga International Airport"): Riga International Airport (Latvian: "Starptautiskā lidosta "Rīga"" ; IATA: RIX, ICAO: EVRA ) is the international airport of Riga, the capital of Latvia, and the largest airport in the Baltic states with direct flights to over 90 destinations in 30 countries.
Relevant evidence: No