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He subsequently launched a landscape and greenhouse business in Warren Ohio and then in 1880 founded The  Davey Tree Expert Company  in nearby  Kent  .
 city of headquarters: Davey Tree Expert Company, Kent
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Davey Tree Expert Company, Kent 
Answer:
 city of headquarters: Davey Tree Expert Company, Kent