7419
As Chairman of the  Civil Aviation Authority of Singapore  (  CAAS  ) for 15 years from 1984 he ensured that the airport had kept up with if not exceed world-class quality standards .
 alternate names: Civil Aviation Authority of Singapore, CAAS
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:
 alternate names: Civil Aviation Authority of Singapore, CAAS