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In what year was sovereignty over Macau transferred from Portugal to China? Answer with the four-digit year only.
How many engines did Concorde have? Answer with the whole number 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.
What is the capital of Australia? Answer with the city name only.
In what year did Virgin Atlantic operate its first flight? Answer with the four-digit year only.
In what year did the Panama Canal open? Answer with the four-digit year only.
In what year did NASA launch the uncrewed Artemis I mission? Answer with the four-digit year only.
In what year did London Heathrow's Terminal 5 open? Answer with the four-digit year 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.
Which founder of Blue Origin also founded Amazon? Answer with the surname 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.
In what year was the kilogram redefined in terms of the Planck constant, taking effect on 20 May? Answer with the four-digit year only.
What is the capital of the US state of Pennsylvania? Answer with the city name only.
Light travels faster in water than in a vacuum. Answer true or false.
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 Finland? Answer with the city name only.
What is the capital of Ghana? Answer with the city name only.
What is the highest mountain in South America? Answer with the name only.
The Airbus A380 has two full-length passenger decks. Answer true or false.
In what year was Space Shuttle Columbia lost during re-entry? Answer with the four-digit year only.
What is the capital of Saudi Arabia? Answer with the city name only.