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He graduated in Mechanical and Electrical engineering in 1953 at the National Technical University of Athens , and became Doctor of Science in Electrical engineering at the Massachusetts Institute of Technology in 1958 .
 organization: National Technical University of Athens; organization: Massachusetts Institute of Technology
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: National Technical University of Athens, Massachusetts Institute of Technology 
Answer:
 organization: National Technical University of Athens; organization: Massachusetts Institute of Technology