Q: The cities of Philadelphia, Pittsburgh, Allentown, Erie, Reading, Scranton, Bethlehem, Altoona and Harrisburg are in which US state?
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A: pennsylvania

Q: In what decade of the 20th century did Howard Carter excavate the tomb of Tutankhamun?
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A: 1920s

Q: What year marked the end of the Chinese 'Ming' Dynasty?
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A:
1644