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The cast includes several actors who had risen to fame in the 1950 s and 1960 s , including 1950 s film stars Richard Beymer , Piper Laurie , and Russ Tamblyn .
 person: Richard Beymer; person: Piper Laurie; person: Russ Tamblyn
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:
 person: Richard Beymer; person: Piper Laurie; person: Russ Tamblyn