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In November 2011 soon after producing and directing the 10th series of Rab C Nesbitt , Gilbert left the Comedy Unit after nearly 30 years as its senior creative .
 person: Gilbert; organization: Comedy Unit
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Gilbert, Comedy Unit 
Answer:
 person: Gilbert; organization: Comedy Unit