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The plot concerns four orphans ( Janet Gaynor , Nancy Drexel , Barry Norton , and Charles Morton ) who become a high wire act , and centers around sinister goings-on at a circus .
 Janet Gaynor, Nancy Drexel, Barry Norton, Charles Morton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Janet Gaynor, Nancy Drexel, Barry Norton, Charles Morton