Assertion: doomsday clock | /r/HasProperty | symbol
Facets:
Source sentences:
text: The Doomsday Clock is a symbol that represents the likelihood of a man-made global catastrophe.
text: The Doomsday Clock is a symbol that was created at the beginning of the Cold War in 1947 to represent the threat of nuclear weapons, which, the Bulletin says have the potential to destroy civilization as we know it.