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Rastgari was again arrested on April 27 , 2004 and sentenced by the Special Clerical Court to four years in prison for “ insulting Islam ” and “ causing schism ” through his book , The Reality of Religious Unity .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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