552
He served as chairman of  Israel  Chemicals of Mifaley Tovala of Harsit and Hol Zach and a member of the board of  Israel Electric Corporation  Dead Sea Works Dead Sea Bromine Dead Sea Periclase Haifa Chemicals Chemicals and Phosphates and others .
 country of headquarters: Israel, Israel Electric Corporation
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:  Israel, Israel Electric Corporation 
Answer:
 country of headquarters: Israel, Israel Electric Corporation