2008
Doctors at  Norfolk and Norwich University Hospital  in eastern  England  looked at the outcome of six trials in which either nylon stitches or staples were used to seal 683 wounds .
 country of headquarters: Norfolk and Norwich University Hospital, England
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: Norfolk and Norwich University Hospital, England