Artificial intelligent assistant

ascertained

ascertained, ppl. a.
  (æsəˈteɪnd)
  [f. ascertain v. + -ed.]
   a. Determined, fixed (obs.). b. Discovered by investigation, known.

1494 Fabyan ii. xxxiii. 26 So y{supt} no tyme asserteyned, is to her deputed or set. 1858 Sears Athan. xviii. 160 Professor Faraday considers it an ascertained fact.

Oxford English Dictionary

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