Input question: The Chaco War (1932-35) that was fought for a region (incorrectly) thought to be oil-rich is South America's bloodiest 20th century conflict. Which two land-locked countries were the participants?

Output answer: bolivia and paraguay

Input question: In which Asian city were the 14th swimming World Championships held in July this year?

Output answer: shanghai

Input question: One of which country's banknotes showed the composer Sibelius

Output answer: finland

Input question: What was the surname of the brother and sister who won the 1980 Wimbledon Mixed Doubles final?

Output answer:
austin