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These radio broadcasts were the first dramatisation of " The Lord of the Rings " , a book by J. R. R. Tolkien , the final volume of which , " The Return of the King " , had been published in October 1955 .
 person: J. R. R. Tolkien
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: J. R. R. Tolkien