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Go-Set journalist Ian Molly Meldrum produced Wickedy Wak's single Billie's Bikie Boys with  Beeb Birtles  of pop rock group  Zoot  as a backing vocalist .
 employee of: Beeb Birtles, Zoot
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: Beeb Birtles, Zoot