7970
In 1929 , he briefly became a " Privatdozent " at the University of Hamburg , where the prospects of becoming a tenured professor were better , but in October of that year a better offer presented itself when he was invited to Princeton University .
 organization: University of Hamburg; organization: Princeton University
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: University of Hamburg, Princeton University 
Answer:
 organization: University of Hamburg; organization: Princeton University