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In what year did Alexei Leonov perform the first spacewalk? Answer with the four-digit year only.
What is the four-letter acronym of Japan's national space agency? Answer with the acronym only.
What is the SI unit of force? Answer with the unit name only, in lowercase.
What is the IATA code of Hartsfield-Jackson Atlanta International Airport? Answer with the three-letter code only.
In what year did SpaceX fly astronauts for the first time, on the Demo-2 mission? Answer with the four-digit year only.
In what year was Star Alliance founded? Answer with the four-digit year only.
In what year did Pan American World Airways cease operations? Answer with the four-digit year only.
Which airline alliance does Lufthansa belong to? Answer with the alliance's full name.
In what year was sovereignty over Macau transferred from Portugal to China? Answer with the four-digit year only.
In what year did Yuri Gagarin become the first human in space? Answer with the four-digit year only.
In what year did Air Berlin cease operations? Answer with the four-digit year only.
In what year did Heike Kamerlingh Onnes discover superconductivity? Answer with the four-digit year only.
Sydney is the capital of Australia. Answer true or false.
How many engines did Concorde have? Answer with the whole number only.
In what year did Alain Aspect, John Clauser and Anton Zeilinger win the Nobel Prize in Physics? Answer with the four-digit year only.
Victoria Falls lies on which river? Answer with the river name only, without the word River.
In what year was the core module of the Mir space station launched? Answer with the four-digit year only.
The Great Red Spot is a storm on Saturn. Answer true or false.
What is the two-character IATA code of Swiss International Air Lines? Answer with the two-character code only.
Who discovered radioactivity in 1896? Answer with the surname only.
What is the capital of Norway? Answer with the city name only.
What is the two-character IATA code of Cathay Pacific? Answer with the two-character code only.
The neutron carries a positive electric charge. Answer true or false.
In what year did Virgin Atlantic operate its first flight? Answer with the four-digit year only.
In what year did LIGO record GW150914, the first direct detection of gravitational waves? Answer with the four-digit year only.