Input question: Formed after national revolution in 1917 the NKVD was the public and also ruthless secret police of which country until 1946?

Output answer: russia

Input question: What does the Latin phrase 'Ars gratia artis' translate to in English?

Output answer: art for art s sake

Input question: Which retailer produces and markets the Kindle eBook?

Output answer: amazon

Input question: Which Commission was set up to investigate the assassination of President Kennedy?

Output answer:
warren commission