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In what year did Namibia become independent? Answer with the four-digit year only.
Who discovered the neutron in 1932? Answer with the surname 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.
How many engines does the Boeing 777 have? Answer with the whole number only.
What is the capital of Afghanistan? Answer with the city name only.
In what year did Charles Lindbergh fly solo nonstop from New York to Paris? Answer with the four-digit year only.
How many Nobel Prizes in Physics did John Bardeen win? Answer with the whole number only.
In which country is Angel Falls, the world's highest uninterrupted waterfall? Answer with the country name only.
What is the capital of Vietnam? Answer with the city 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 the de Havilland Comet begin the world's first scheduled jet airliner service? Answer with the four-digit year only.
In what year did Fermilab announce the discovery of the top quark? Answer with the four-digit year only.
In what year did the Tata Group take back control of Air India from the government? Answer with the four-digit year only.
In what year was Cathay Pacific founded? Answer with the four-digit year only.
In what year is Halley's Comet next expected at perihelion? Answer with the four-digit year only.
In what year did Marie Curie win her first Nobel Prize, the one in physics? Answer with the four-digit year only.
In what year was the Chernobyl nuclear accident? Answer with the four-digit year only.
Bolivia is landlocked. Answer true or false.
How many constellations does the International Astronomical Union recognize? Answer with the whole number only.
Delta Air Lines is a member of the oneworld alliance. Answer true or false.
Jupiter is the largest planet in the Solar System. Answer true or false.
What is the largest moon of Saturn? Answer with the name only.
What is the standard mains frequency of the electricity grid in continental Europe, in hertz? Answer with the whole number only.
In what year was Concorde retired from commercial service? Answer with the four-digit year only.