12081
It will be Australia's largest corporate takeover since Singapore Telecommunications or  SingTel  bought rival  Optus  in 2001 for about A$ 14 billion .
 subsidiaries: SingTel, Optus
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:
 subsidiaries: SingTel, Optus