17108
Most of the documents , chiefly the minutes of the sessions , were written in Greek ; others , e.g. the imperial letters , were issued in both languages ; others , again , e.g. the papal letters , were written in Latin .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None