question: OPTIONS:
- yes
- no
CDs are increasingly being replaced by other forms of digital storage and distribution, with the result that audio CD sales rates in the U.S. have dropped about 50% from their peak; however, they remain one of the primary distribution methods for the music industry.
How many CDs had been distrubuted worldwide by 2007?

answer: no

question: OPTIONS:
- yes
- no
The writer Mukhtar Shakhanov claimed that a KGB officer testified that 168 protesters were killed, but that figure remains unconfirmed.
Who was demonstrating?

answer: no

question: OPTIONS:
- yes
- no
In the 11th century and the 12th century, the princes and their retinues, which were a mixture of Slavic and Scandinavian elites, dominated the society of Kievan Rus'.
What was severely lacking in Kievan in the 12th century?

answer: no

question: OPTIONS:
- yes
- no
Contemporary architecture includes the Musee du Quai Branly by Jean Nouvel (2006) and the new contemporary art museum of the Louis Vuitton Foundation by Frank Gehry (2014).
Who built the Louvre Pyramid?

answer:
no