Input question: In 1931, the American physical chemist Harold Urey demonstrated the existence of what type of 'weighty' liquid that proved important in the development of the atomic bomb?

Output answer: heavy water

Input question: In 2008, Islamabad International Airport was renamed as a tribute to which person who passed away in 2007?

Output answer: benazir bhutto

Input question: What Chan Buddhist monastery in the Henan province of China is best known to the world for its association with martial arts?

Output answer: shaolin

Input question: In which year was the word homosexual first used?

Output answer:
1869