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The Pentagon will hold a briefing on the Afghanistan attack that killed a U . S . general and wounded 14 . LIVE here : http://t.co/cs2DU6DsqV
 Pentagon, Afghanistan, U . S .
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pentagon, Afghanistan, U . S .