What is the standard mains frequency of the electricity grid in the United States, in hertz? Answer with the whole number 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.
What is the two-character IATA code of Southwest Airlines? Answer with the two-character code only.
What is the capital of Hungary? Answer with the city name only.
In what year did STS-1, the first Space Shuttle mission, launch? Answer with the four-digit year only.
In what year did Paul Dirac and Erwin Schrodinger share the Nobel Prize in Physics? Answer with the four-digit year only.
Who formulated the exclusion principle, which says two electrons cannot share the same quantum state? Answer with the surname only.
In what year did the Curiosity rover land on Mars? Answer with the four-digit year only.
Airport code ICN belongs to the main international airport of which city? Answer with the city name only.
What is the name of NASA's program to return astronauts to the Moon, named after Apollo's twin sister? Answer with the name only.
What was the name of the helicopter that flew on Mars in 2021? Answer with the name only.
How many federal states (Lander) does Germany have? Answer with the whole number only.
In what year was the first Solvay Conference on physics held? Answer with the four-digit year only.
Which airline flew the first commercial Airbus A380 service, in 2007? Answer with the airline name only.
Emirates is headquartered in Abu Dhabi. Answer true or false.
What is the two-character IATA code of Delta Air Lines? Answer with the two-character code only.
