Based on the given question and tppic, give an answer. The answer is available on on the internet. The questions are mostly centered around a single named entity.
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Question: concept: Greece  question:  which island in greece?

Answer: ['Ionian Islands']


Question: concept: Angola  question:  where is angola located?

Answer: ['Africa']


Question: concept: United States  question:  what kind government does the us have?

Answer:
Presidential system, Federal republic, Representative democracy, Two-party system, Constitutional republic, Republic