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Graham subsequently worked on two films with director Bryan Singer , X2 ( 2003 ) and Superman Returns ( 2006 ) ; he co-edited these films with John Ottman .
 Graham, Bryan Singer, John Ottman
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Graham, Bryan Singer, John Ottman