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Over its two series , the programme featured guest appearances by many notable actors including Christopher Lee , Margaret Leighton , Roy Dotrice , Joan Collins , Jeremy Kemp , Peter Cushing , Judy Geeson , Julian Glover , Ian McShane , Leo McKern , Billie Whitelaw , Richard Johnson , Patrick Troughton , Peter Bowles , Sarah Douglas , David Prowse , Isla Blair , Stuart Damon and Brian Blessed .
 person: Christopher Lee; person: Margaret Leighton; person: Roy Dotrice; person: Joan Collins; person: Jeremy Kemp; person: Peter Cushing; person: Judy Geeson; person: Julian Glover; person: Ian McShane; person: Leo McKern; person: Billie Whitelaw; person: Richard Johnson; person: Patrick Troughton; person: Peter Bowles; person: Sarah Douglas; person: David Prowse; person: Isla Blair; person: Stuart Damon; person: Brian Blessed
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: Christopher Lee, Margaret Leighton, Roy Dotrice, Joan Collins, Jeremy Kemp, Peter Cushing, Judy Geeson, Julian Glover, Ian McShane, Leo McKern, Billie Whitelaw, Richard Johnson, Patrick Troughton, Peter Bowles, Sarah Douglas, David Prowse, Isla Blair, Stuart Damon, Brian Blessed 
Answer:
 person: Christopher Lee; person: Margaret Leighton; person: Roy Dotrice; person: Joan Collins; person: Jeremy Kemp; person: Peter Cushing; person: Judy Geeson; person: Julian Glover; person: Ian McShane; person: Leo McKern; person: Billie Whitelaw; person: Richard Johnson; person: Patrick Troughton; person: Peter Bowles; person: Sarah Douglas; person: David Prowse; person: Isla Blair; person: Stuart Damon; person: Brian Blessed