The World Wide Web was invented at CERN.
Why it is true
Tim Berners-Lee created the web in 1989 to facilitate information sharing among scientists at the European Organization for Nuclear Research.
Source: MIT
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.