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In favor of interactionism , Celia Green ( 2003 ) argues that epiphenomenalism does not even provide a satisfactory solution to the problem of interaction posed by substance dualism .
 Celia Green
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Celia Green