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NORTHWEST  ( Romulus Mich. )  Northwest Airlines  Corp. said on Wednesday it will cut jobs because of high oil prices and will begin charging $ 15 to check a single piece of luggage and as much as $ 100 to redeem a frequent-flier award ticket .
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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:
 NA: NORTHWEST, Northwest Airlines