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In 1927 started his academic career as an assistant lecturer at Edinburgh University ( obtaining a DSc ) , followed by a fellowship at Pembroke College , Cambridge , before becoming a professor of pure mathematics at Liverpool University in 1933 .
 organization: Edinburgh; organization: Pembroke College , Cambridge; organization: Liverpool University
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:
 organization: Edinburgh; organization: Pembroke College , Cambridge; organization: Liverpool University