2284
Moscow  Sun Yat-sen University  officially the Sun Yat-sen Communist University of the Toilers of  China  was a Comintern school which operated from 1925-1930 .
 country of headquarters: Sun Yat-sen University, China
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: Sun Yat-sen University, China