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Four world powers called on Israel to freeze the construction of further settlements in the West Bank UN Secretary-General  Ban Ki-moon  said after a meeting of the international Middle East Quartet Friday.The Quartet called on Israel to freeze all settlement activity Ban said after the meeting of the  United Nations  the United States Russia and the European Union .
 top members employees: Ban Ki-moon, United Nations
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:  Ban Ki-moon, United Nations 
Answer:
 top members employees: Ban Ki-moon, United Nations