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Singapore hanged a Thai farmer at Changi Prison on Friday for drug trafficking , the Central Narcotics Bureau ( CNB ) said .
 else: Thai; organization: CNB; location: Singapore; organization: Central Narcotics Bureau; location: Changi Prison
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 else: Thai; organization: CNB; location: Singapore; organization: Central Narcotics Bureau; location: Changi Prison