315
He served as vice president of the  Chicago  Rock Island and Pacific Railroad and was a director of the  Chicago and Eastern Illinois Railroad  and the Delaware and Hudson Canal Company .
 city of headquarters: Chicago, Chicago and Eastern Illinois Railroad
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: Chicago, Chicago and Eastern Illinois Railroad