316717
He was then assigned to 20 Squadron to pilot a Royal Aircraft Factory FE .2 d. He scored his first victory on 8 June 1917 , with Edward Sayers manning the observer 's guns .
 Edward Sayers
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Edward Sayers