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In addition , his writing has been the topic of discussion on BBC Radio 4 in the UK and syndicated radio in the USA and a theatrical installation project in London by Extant and the Open University .
 organization: Open University
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: Open University 
Answer:
 organization: Open University