1557
Mwapachu made the appeal in a statement released by the  EAC  Secretariat based in Arusha in northeast  Tanzania  on commencement of the EAC Common Market on July 1 .
 country of headquarters: EAC, Tanzania
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:
 country of headquarters: EAC, Tanzania