71756
Telling the story of an attack of army ants on a Brazilian cocoa plantation , it was based on the 1937 short story " Leiningen Versus the Ants " by Carl Stephenson .
 Carl Stephenson
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Carl Stephenson