155787
In its 1912 incarnation , the journal was sponsored by Sigma Delta Chi , the journalistic fraternity , but beginning in 1920 the journal was unaffiliated with Sigma Delta Chi ; in fact , all articles were published anonymously .
 Sigma Delta Chi, Sigma Delta Chi
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sigma Delta Chi, Sigma Delta Chi