What is the chemical formula of water? Answer with the formula only, using plain characters, no subscripts.
Which element is the most abundant in the universe by mass? Answer with the element name only, in English.
Who formulated the three laws of planetary motion published between 1609 and 1619? Answer with the surname only.
Whales are mammals. Answer true or false.
In what year was the Higgs boson's discovery announced at CERN? Answer with the four-digit year only.
Which planet did William Herschel discover in 1781? Answer with the planet name only.
Penguins are native to the Arctic. Answer true or false.
What is the largest internal organ in the human body? Answer with the organ name only, in lowercase.
Which pigment gives plants their green colour? Answer with the pigment name only, in lowercase.
What is the name of the largest volcano on Mars? Answer with the two-word name only.
In what year did the IAU reclassify Pluto as a dwarf planet? Answer with the four-digit year only.
What is the ISO 4217 currency code of the Swiss franc? Answer with the three-letter code only.
In what year was the euro introduced as an accounting (non-cash) currency? Answer with the four-digit year only.
In what year did Facebook agree to acquire WhatsApp? Answer with the four-digit year only.
Which subreddit was at the center of the 2021 GameStop short squeeze? Answer with the subreddit name only, without the r/ prefix.
Which Snapchat co-founder has served as CEO of Snap Inc.? Answer with the surname only.
Who founded the Vanguard Group? Answer with the surname only.
