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Double Star is a joint satellite based space mission by the  China National Space Administration  (  CNSA  ) and the European Space Agency ( ESA ) .
 alternate names: China National Space Administration, CNSA
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: China National Space Administration, CNSA