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Film Also Television Radio Music Game Comic books Other 1938 radio adaption by Orson Welles The 1938 radio broadcast caused public outcry against the episode , as many listeners believed that an actual Martian invasion was in progress , a notable example of mass hysteria .
 Orson Welles
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Orson Welles