15645
Reno  Tahoe International was the hub of  Reno Air  a now-defunct medium sized airline that had MD-80 and MD-90s to many cities until it was bought by American Airlines and later disposed of in 2001 .
 city of headquarters: Reno, Reno Air
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Reno, Reno Air 
Answer:
 city of headquarters: Reno, Reno Air