280071
The play had earlier been submitted to the Manx Language Society competition organised by Sophia Morrison in 1913 , but it was judged to come behind the plays of Christopher R. Shimmin and John Kneen , despite receiving special praise by Alfred Perceval Graves .
 Sophia Morrison, John Kneen, Alfred Perceval Graves
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sophia Morrison, John Kneen, Alfred Perceval Graves