2731
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 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:
 city of headquarters: Davey Tree Expert Company, Kent