What is the standard mains frequency of the electricity grid in continental Europe, in hertz? Answer with the whole number only.
In what year did the Airbus A320 enter commercial service? Answer with the four-digit year 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 did Pan American World Airways cease operations? Answer with the four-digit year only.
Who commanded Apollo 13? Answer with the surname only.
Which European country occupies most of the Jutland peninsula? Answer with the country name only.
In what year did Kazakhstan move its capital from Almaty to Astana? Answer with the four-digit year only.
Norway is a member of the European Union. Answer true or false.
In what year did NASA launch the uncrewed Artemis I mission? Answer with the four-digit year only.
How many neutrons are in the nucleus of carbon-12? Answer with the whole number only.
What is the largest freshwater lake in the world by surface area? Answer with the lake name only, without the word Lake.
In what year did Brasilia become the capital of Brazil? Answer with the four-digit year only.
What is the capital of Nigeria? Answer with the city name only.
How many sovereign countries are there in South America? Answer with the whole number only.
How many hexagonal segments make up the James Webb Space Telescope's primary mirror? Answer with the whole number only.
Which sea lies between Italy and the Balkan Peninsula? Answer with the sea name only, without the word Sea.
How many meters is one astronomical unit, as defined exactly by the IAU in 2012? Answer with the whole number only.
What is the capital of Ghana? Answer with the city name only.
In what year did Concorde enter commercial service? Answer with the four-digit year only.
