4157
CR Enterprises disposed Dongguan  China Resources  Petrochems to Sinopec at the end of 2005 the mainland petrochemical services in October 2006 and the business in  Hong Kong  to Sinopec in 2007 .
 city of headquarters: China Resources, 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:
 city of headquarters: China Resources, Hong Kong