Problem: In mathematics, what is an angle called which measures more than 90 degrees but less than 180 degrees?
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A: obtuse angle

Problem: On TV how were Robert Harper and Thomas Derbyshire known?
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A: cannon and ball

Problem: Which instrument, with a range of around 3 -4 octaves, has its lowest string tuned to C 2 octaves below middle C, and the others tuned in fifths?
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A: cello

Problem: In which country did the 'Boxer Rebellion' occur?
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A:
china