324795
He was captured at the 1942 fall of Singapore and was a prisoner of war for three and a half years at Changi , where he organised debates among the prisoners .
 location: Singapore
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: Singapore 
Answer:
 location: Singapore