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Singapore Airlines  ' chief executive  Chew Choon Seng  on Thursday said he was not afraid of boosted competition on the lucrative Singapore-Kuala Lumpur route following the end of a long-held monopoly .
 top members employees: Singapore Airlines, Chew Choon Seng
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:  Singapore Airlines, Chew Choon Seng 
Answer:
 top members employees: Singapore Airlines, Chew Choon Seng