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The play , Walken 's first venture into playwriting , adopts a surreal tone , and is replete with references to aspects of Presley 's life , as well as to other pieces of theatre , including Hamlet and those of Tennessee Williams .
 person: Walken; person: Presley; person: Tennessee Williams
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: Walken; person: Presley; person: Tennessee Williams