(OMITTED) A lawyer from nearby Maryland, who did not want to give his name, engaged in an impromptu debate with Tea Party supporters and later expressed concern about some of their rhetoric.

VOA: standard.2010.04.15

With an impromptu a cappella performance, the boys sing their way into a deal.

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The space agency never before staged such a fast, impromptu spacewalk for a station crew.

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We can say, however, that a clementine or other malleable citrus fruit makes an impromptu prop in a pinch.

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