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If You Leave Me Now is the title of a popular hit ballad by the American rock group  Chicago  from their album Chicago X. It was written and sung by bass guitar player  Peter Cetera  and released as a single in July 1976 .
 employee of: Chicago, Peter Cetera
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:
 employee of: Chicago, Peter Cetera