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Concorde cruised faster than the speed of sound. Answer true or false.
In what year was the Boeing 737 MAX grounded worldwide after two crashes? Answer with the four-digit year only.
How many seconds are in one day of exactly 24 hours? Answer with the whole number only.
What is the IATA code of Tokyo Narita International Airport? Answer with the three-letter code only.
What is the capital of Kazakhstan? Answer with the city name only.
How many member states does the European Union have, as of 2025? Answer with the whole number only.
What is the capital of Peru? Answer with the city name only.
What is the largest US state by area? Answer with the name only.
In what year did the Channel Tunnel open? Answer with the four-digit year only.
What is the two-character IATA code of Air France? Answer with the two-character code only.
Which color of visible light has the longest wavelength? Answer with the color name only, in lowercase.
In what year did Roger Penrose, Reinhard Genzel and Andrea Ghez share the Nobel Prize in Physics? Answer with the four-digit year only.
What is the height of Mount Kilimanjaro in meters, as usually cited? Answer with the whole number only.
In what year did Wolfgang Pauli propose the existence of the neutrino? Answer with the four-digit year only.
In what year did Mars Pathfinder land on Mars with the Sojourner rover? Answer with the four-digit year only.
Which strait separates Spain from Morocco? Answer with the strait name only, without the words Strait of.
What is the capital of Venezuela? Answer with the city name only.
Pluto is larger than Earth's Moon. Answer true or false.
In what year did Carl Anderson discover the positron? Answer with the four-digit year only.
What is the standard mains frequency of the electricity grid in the United States, in hertz? Answer with the whole number only.
Which moon of Jupiter is the most volcanically active body in the Solar System? Answer with the name only.
What is the capital of Nepal? Answer with the city name only.
In what year was sovereignty over Hong Kong transferred from the United Kingdom to China? Answer with the four-digit year only.
In which French city are the main final assembly lines for the Airbus A350 located? Answer with the city name only.
The Amazon River flows into the Pacific Ocean. Answer true or false.