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By 28 July 2016 Missile Defense Agency planning and agreements had clarified enough to give more details about the Aegis Ashore sites in Romania ( 2014 ) and Poland ( 2018 ) .
 Missile Defense Agency, Aegis Ashore, Romania, Poland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Missile Defense Agency, Aegis Ashore, Romania, Poland