[Q]: Sentence: It can only access previous versions of shared files stored on a Windows Server computer.:74 The subsystem on which these components worked, however, is still available for other software to use.:74 Question: What does :76 Shadow Copy do?
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[A]: yes

[Q]: Sentence: It was probably discovered independently in China before 2800 BC, in Central America perhaps around 600 AD, and in West Africa about the 9th or 10th century AD. Question: When was copper thought to have been discovered in China?
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[A]: yes

[Q]: Sentence: Many of Paris' concert/dance halls were transformed into movie theatres when the media became popular beginning in the 1930s. Question: In what decade did movie theaters become popular?
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[A]:
yes