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Background On the basis of experience during World War I , the Admiralty instituted trade convoys in United Kingdom coastal waters from September , 1939 .
 organization: Admiralty; location: United Kingdom
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Admiralty; location: United Kingdom