4651
It was formerly run by Kowloon-Canton Railway Corporation ( KCR ) but has been leased for 50 years to the  MTR Corporation  which is partially owned by the  Hong Kong  Government .
 subsidiaries: MTR Corporation, Hong Kong
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: MTR Corporation, Hong Kong