318114
His chamber opera , Elsewhereless , a collaboration with Atom Egoyan , premiered in 1998 and has been staged 35 times internationally .
 Atom Egoyan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Atom Egoyan