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The  University of Aberdeen  investigators in  Scotland  found arsenic levels ranging from 0.06 to 0.16 milligrams per kilo in the samples of baby rice with an average of 11 mg/kilo per sample .
 country of headquarters: University of Aberdeen, Scotland
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 Aberdeen, Scotland