1666
While several of the tracks featured just the core band of Jagger Richards Ronnie Wood Charlie Watts and Bill Wyman keyboardists Nicky Hopkins and co-founder  Ian Stewart  sax player Bobby Keys and harmonica player Sugar Blue joined the  Rolling Stones  on Emotional Rescue .
 employee of: Ian Stewart, Rolling Stones
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: Ian Stewart, Rolling Stones