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Chen Yuan  president of the  CDB  Yafez Osman Bangladeshi state minister for science information and communication technology were present at the signing ceremony .
 top members employees: Chen Yuan, CDB
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:  Chen Yuan, CDB 
Answer:
 top members employees: Chen Yuan, CDB