82183
From 1981 to 1992 , he was a researcher at University College London , focusing on research into network-based applications .
 organization: University College London
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: University College London 
Answer:
 organization: University College London