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In 1973 , with Mike O'Regan ( who had an economics degree from Cambridge ) , Fischer co-founded Research Machines , a British microcomputer and then software company for the educational market .
 person: Mike O'Regan; organization: Cambridge; person: Fischer; location: British
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: Mike O'Regan; organization: Cambridge; person: Fischer; location: British