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Havnevik set about working with producers to help hone her sound the most famous of whom is Guy Sigsworth part of  Frou Frou  who has also worked with  Imogen Heap  Madonna Jem Britney Spears and Alanis Morissette .
 None
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:
 NA: Frou Frou, Imogen Heap