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The Mark 1 was to provide a computing resource within the university , to allow researchers to gain experience in the practical use of computers , but it very quickly also became a prototype on which the design of Ferranti 's commercial version could be based .
 organization: Ferranti
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: Ferranti 
Answer:
 organization: Ferranti