13878
MetroJet  was a no-frills airline within an airline brand operated as a division of US Airways from  1998  to 2001 .
 founded: MetroJet, 1998
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:  MetroJet, 1998 
Answer:
 founded: MetroJet, 1998