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Hosted first by McDonald Hobley from 1957 to 1958 , then by David Jacobs in 1959 and finally by Shaw Taylor in 1961 , it was then aired on Channel 4 .
 McDonald Hobley, David Jacobs, Shaw Taylor, Channel 4
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:
 McDonald Hobley, David Jacobs, Shaw Taylor, Channel 4