How many Imperial gallons would a firkin of beer contain?

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At what age does a filly become a mare in thoroughbred horse racing?

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Which company introduced Comet cleanser back in 1956?

What was boxer John L. Sullivan nicknamed?

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What Blue Öyster Cult song does Stephen King quote in the preface of his novel "The Stand"?

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Which singer was born Katheryn Elizabeth Hudson?

What famous ship was sunk on May 7, 1915?