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.

Q: concept: Medicare  question:  what is medicare a?

A: ['Centers for Medicare and Medicaid Services']
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Q: concept: Antonio Vivaldi  question:  who inspired antonio vivaldi?

A: ['Johann Sebastian Bach']
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Q: concept: Richardwagner  question:  what did wagner compose?

A:
['Die Feen', 'Rienzi, der Letzte der Tribunen', 'Tannhäuser', 'Das Rheingold', 'Götterdämmerung', 'Tristan und Isolde', 'Die Walküre', 'Der Ring des Nibelungen', 'Der fliegende Holländer', 'Siegfried']
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