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The  China  Ping An Insurance ( Group ) which had plans to buy a 22 billion yuan ( 3.2 billion U.S. dollars ) stake in  Shenzhen Development Bank  ( SDB ) said Sunday that there are no changes in buying into the bank for the moment .
 country of headquarters: China, Shenzhen Development Bank
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  China, Shenzhen Development Bank 
Answer:
 country of headquarters: China, Shenzhen Development Bank