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Police seized dozens of kilos of heroin with a street value of hundreds of millions of Belgian francs , a public prosecutor 's office spokesman in the port city of Antwerp said .
 organization: Antwerp; else: Belgian
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:
 organization: Antwerp; else: Belgian