In what year did fragments of Comet Shoemaker-Levy 9 hit Jupiter? Answer with the four-digit year only.
How many countries share a land border with China? Answer with the whole number only.
In what year did Alaska Air Group complete its acquisition of Hawaiian Airlines? Answer with the four-digit year only.
What is the largest country in the world by area? Answer with the country name only.
In what year did the Chelyabinsk meteor explode over Russia? Answer with the four-digit year only.
What is the two-character IATA code of KLM? Answer with the two-character code only.
What is the IATA code of Paris Charles de Gaulle Airport? Answer with the three-letter code only.
How many engines did the McDonnell Douglas DC-10 have? Answer with the whole number only.
What is the flag carrier airline of the Netherlands? Answer with the airline name only.
In what year did Theodore Maiman demonstrate the first working laser? Answer with the four-digit year only.
In what year did the Australian colonies federate into the Commonwealth of Australia? Answer with the four-digit year only.
Which dwarf planet is the largest object in the asteroid belt? Answer with the name only.
How many time zones span the contiguous United States? Answer with the whole number only.
Which airline alliance does British Airways belong to? Answer with the alliance's full name.
In what year did the travel group Thomas Cook and its airline collapse? Answer with the four-digit year only.
Who led the team that built Chicago Pile-1, the first nuclear reactor? Answer with the surname only.
In what year did Hayabusa2 return its asteroid Ryugu samples to Earth? Answer with the four-digit year only.
What is the two-character IATA code of China Eastern Airlines? Answer with the two-character code only.
How many degrees of longitude does one standard time zone span? Answer with the whole number only.
