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In 2011 musician Ben Waters released a version featuring five past and present members of the  Rolling Stones  as part of a tribute album for former Rolling Stones pianist  Ian Stewart  .
 employee of: Rolling Stones, Ian Stewart
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:  Rolling Stones, Ian Stewart 
Answer:
 employee of: Rolling Stones, Ian Stewart