1813
Prof. Shiba is Professor Emeritus of  University of Tsukuba  in  Japan  Advisory Professor Shanghai Jiao Tong University China and Distinguished Honorary Professor Indian Institute of Technology Kanpur .
 country of headquarters: University of Tsukuba, Japan
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: University of Tsukuba, Japan