Assertion: puzzle | /r/HasProperty | riddle
Facets:
value: often
type: TEMPORAL
Source sentences:
text: 2 Puzzle, riddle, enigma refer to something baffling or confusing that is to be solved.
text: The puzzle is often called Einstein's Puzzle or Einstein's Riddle because it is said to have been invented by Albert Einstein as a boy; it is also sometimes attributed to Lewis Carroll.
text: The puzzles that were first documented are riddles.