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In which country is the ancient city of Petra? Answer with the country name only.
How many states does the United States have? Answer with the whole number only.
In what year did the Tenerife airport disaster, the deadliest accident in aviation history, occur? Answer with the four-digit year only.
Ryanair is headquartered in Ireland. Answer true or false.
Who founded Virgin Atlantic? Answer with the surname only.
What was the name of the Soviet and Russian space station that was deorbited in 2001? Answer with the name only.
In what year was 51 Pegasi b, the first exoplanet found orbiting a Sun-like star, announced? Answer with the four-digit year only.
In what year did Viking 1 land on Mars? Answer with the four-digit year only.
What is the capital of Iran? Answer with the city name only.
In what year was Cathay Pacific founded? Answer with the four-digit year only.
How many Apollo missions landed astronauts on the Moon? Answer with the whole number only.
In what year was the Kepler space telescope launched? Answer with the four-digit year only.
In what year did Namibia become independent? Answer with the four-digit year only.
In what year did Alitalia stop flying and hand over to ITA Airways? Answer with the four-digit year only.
Who discovered the neutron in 1932? Answer with the surname only.
How many engines does the Boeing 777 have? Answer with the whole number only.
In what year did the Ingenuity helicopter make the first powered flight on Mars? Answer with the four-digit year only.
In what year did Charles Lindbergh fly solo nonstop from New York to Paris? Answer with the four-digit year only.
What is the capital of Afghanistan? Answer with the city name only.
How many autonomous communities does Spain have? Answer with the whole number only.
In what year was Qantas founded? Answer with the four-digit year only.
At which cosmodrome in Kazakhstan did Gagarin's flight launch? Answer with the name only.
In what year did the Suez Canal open? Answer with the four-digit year only.
In what year did the de Havilland Comet begin the world's first scheduled jet airliner service? Answer with the four-digit year only.
What is the capital of Vietnam? Answer with the city name only.