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His death , and those of Bill Pertwee in 2013 and Pamela Cundell in 2015 , leaves only two surviving major cast members from " Dad 's Army " : Ian Lavender and Frank Williams , the former of whom is the only surviving cast member to have played a character in the platoon .
 person: Bill Pertwee; person: Pamela Cundell; media: Dad 's Army; person: Ian Lavender; person: Frank Williams
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: Bill Pertwee, Pamela Cundell, Dad 's Army, Ian Lavender, Frank Williams 
Answer:
 person: Bill Pertwee; person: Pamela Cundell; media: Dad 's Army; person: Ian Lavender; person: Frank Williams