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The president of the railroad former  Chicago  mayor  Walter S. Gurnee  speculated on land in Lake County spurring the development of railway suburbs along the line .
 cities of residence: Chicago, Walter S. Gurnee
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:  Chicago, Walter S. Gurnee 
Answer:
 cities of residence: Chicago, Walter S. Gurnee