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The tape has been transcribed by researcher Ian Ridpath , who includes a link to an audio download and also a step-by-step analysis of the entire contents of the tape .
 Ian Ridpath
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Ian Ridpath