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Film scholars have interpreted the film as a metaphor for class conflict , reflecting the Great Depression , and it has been studied for its portrayal of people with disabilities , with theorists arguing that it presents an anti-eugenics message .
 time: Great Depression; disease: people with disabilities
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 time: Great Depression; disease: people with disabilities