Verified fact (5)
I believe the answer is:
truth
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">verified fact</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for truth that I've seen before include "real story" , "Verity" , "Actuality" , "known facts" , "Verified fact" .)