True thing (4)

I think it could be either:

Which length description are you looking for?:

fact

'true thing' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for fact that I've seen before include "copyright protection agency?" , "Piece of information known to be true" , "Certain thing" , "An indisputable truth" , "Verifiable truth" .)

I've seen this clue in the USA Today.

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