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In 1973 Revenaugh became the first General Director of the Institute For Advanced Music Study in Crans-Montana , Switzerland ; a full scholarship international programme with faculty that included Zino Francescatti , Gregor Piatigorsky , Ib Lanzky-Otto and Rudolf Kempe .
 Revenaugh, Zino Francescatti, Gregor Piatigorsky, Rudolf Kempe
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Revenaugh, Zino Francescatti, Gregor Piatigorsky, Rudolf Kempe