175492
He became involved with those issues in the early 1970s at the first site on the ARPANET , which was located at UCLA .
 organization: UCLA
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: UCLA 
Answer:
 organization: UCLA