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A third unit , headed by Derek Meddings and his assistant Mike Trim , handled special effects and miniatures and was tasked with creating all the permanent sets and models , such as the Cloudbase interiors and scaled-down Spectrum Pursuit Vehicles .
 person: Derek Meddings; person: Mike Trim
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Derek Meddings; person: Mike Trim