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The MV Arctic Sea is a merchant vessel cargo ship , formerly registered in Malta that was reported as missing between late July and mid August 2009 en route from Finland to Algeria .
 Sea, Malta, Finland, Algeria
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sea, Malta, Finland, Algeria