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From 1881 to 1884 he was a Professor of biology and horticulture at  Ontario Agricultural College  in the  University of Guelph  .
 Ontario Agricultural College, University of Guelph
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Ontario Agricultural College, University of Guelph