Input question: Which US poet wrote a collection of poems called Leaves of Grass, first published in 1855?

Output answer: walt whitman

Input question: Olof Palme was assassinated in 1986 when he was Prime Minister of which country?

Output answer: sweden

Input question: Which basalt tablet was famously rediscovered in 1799 by French Captain Pierre Francois Bouchard, bearing parallel inscriptions in Greek, Egyptian Hieroglyphic and demotic characters?

Output answer: rosetta stone

Input question: Larry Mullen Jr is the drummer in which Irish band?

Output answer:
u2