What is the two-character IATA code of Spirit Airlines? Answer with the two-character code only.
The summit of Mount Everest lies on the border between Nepal and China. Answer true or false.
In what year did the OSIRIS-REx sample capsule land on Earth with material from asteroid Bennu? Answer with the four-digit year only.
How many spacetime dimensions does superstring theory require? Answer with the whole number only.
What is the capital of Turkey? Answer with the city name only.
In what year was the Kepler space telescope launched? Answer with the four-digit year only.
In what year did Johannes Kepler publish Astronomia nova? Answer with the four-digit year only.
In what year did South Sudan become independent? Answer with the four-digit year only.
What is the capital of Iran? Answer with the city name only.
What was the name of the Soviet and Russian space station that was deorbited in 2001? Answer with the name only.
How many Nobel Prizes in Physics did John Bardeen win? Answer with the whole number only.
What is the capital of Vietnam? Answer with the city name only.
In what year did Alessandro Volta announce the voltaic pile, the first electric battery? Answer with the four-digit year 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 did the Airbus A320 enter commercial service? Answer with the four-digit year only.
