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In what year did Argentina's president promote the LIBRA token, which then crashed? Answer with the four-digit year only.
Which pigment makes plants green? Answer with the single word only, in lowercase.
Which South Korean artist performed 'Gangnam Style'? Answer with the name only.
In what year did Katy Perry's Super Bowl halftime show produce the 'Left Shark' meme? Answer with the four-digit year only.
Who created the Silk Road marketplace? Answer with the surname only.
How many wei are in one ether? Answer with the whole number only.
In what year was the Silk Road darknet market shut down by the FBI? Answer with the four-digit year only.
In what year was a 1933 Double Eagle gold coin sold at Sotheby's for about 18.9 million US dollars? Answer with the four-digit year only.
Who proposed the planetary model of the hydrogen atom in 1913? Answer with the surname only.
What is the hardest substance in the human body? Answer with the single word only, in lowercase.
In what year was the Susan B. Anthony dollar coin first issued? Answer with the four-digit year only.
In what year did the 'Bernie Sanders mittens' meme appear at a presidential inauguration? Answer with the four-digit year only.
Grumpy Cat's real name was Tardar Sauce. Answer true or false.
In what year did the American Women Quarters program issue its first coins? Answer with the four-digit year only.
In what year was the Binance exchange founded? Answer with the four-digit year only.
Which US city is home to the original United States Mint founded in 1792? Answer with the city name only.
In what year did the FTX exchange collapse? Answer with the four-digit year only.
Which gymnast inspired the 2012 'not impressed' meme? Answer with the surname only.
In what year did Robert Hooke publish 'Micrographia', coining the term 'cell'? Answer with the four-digit year only.
How many bitcoins did Laszlo Hanyecz pay for two pizzas in 2010? Answer with the whole number only.
What is the atomic number of chlorine? Answer with the whole number only.
In what year did the US Mint's 50 State Quarters program begin? Answer with the four-digit year only.
What was the main silver coin of ancient Rome called? Answer with the single word only, in lowercase.
The human heart has four chambers. Answer true or false.
What is the atomic number of tungsten? Answer with the whole number only.