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But he added they had difficulty remembering what happened during their visits to Belgium , perhaps because of drugs , and were unsure whether they were filmed for pornography .
 location: Belgium
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
 Entities: Belgium 
Answer:
 location: Belgium