8798
He was an instructor at Princeton University from 1969 to 1972 , and an assistant professor at MIT from 1972 to 1974 .
 organization: Princeton University; organization: MIT
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: Princeton University; organization: MIT