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Saint Demetrius of Rostov , in his Great Synaxarion , also mentions that the blind man 's name was Celidonius .
 Demetrius of Rostov, Celidonius
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Demetrius of Rostov, Celidonius