Question: The phenomenon known as Beatlemania originated in the United Kingdom, birthplace of the Beatles, when the band first realised enormous popularity there in 1963, the Beatles achieved a commercial breakthrough with their second UK single release, "Please Please Me", a song and the second single released by English rock group the Beatles in the United Kingdom, and the first to be issued, in which country?
{'answer': 'United States', 'supporting_facts': [['Beatlemania in the United Kingdom', 1], ['Please Please Me (song)', 0]]}