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Edelweiss Air  AG is a charter airline with its head office in the Edelweiss Air Operations Center ( OPC ) on the property of  Zurich  Airport and in Kloten Switzerland operating mainly out of Zurich Airport with a smaller base at Geneva International Airport .
 city of headquarters: Edelweiss Air, Zurich
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 city of headquarters: Edelweiss Air, Zurich