330156
He stood in the Luton by-election , 1963 as a CPGB candidate , but took last place with only 593 votes .
 organization: Luton
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: Luton 
Answer:
 organization: Luton