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The observations are interesting but one must be cautious about drawing conclusions based purely on the expression of a few molecular markers without supporting functional data said  Peter Andrews  a bio-medical scientist and co - director of the Centre for Stem Cell Biology and the  University of Sheffield  in England .
 top members employees: Peter Andrews, University of Sheffield
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:
 top members employees: Peter Andrews, University of Sheffield