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Born and educated in North Wales he read Natural Sciences at Churchill College Cambridge and obtained a PhD in inorganic chemistry from  Imperial College  London working in the laboratory of Professor Sir  Geoffrey Wilkinson  .
 employee of: Imperial College, Geoffrey Wilkinson
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:
 employee of: Imperial College, Geoffrey Wilkinson