The tool did it because this is what it was designed and trained to do --- at great expense and effort --- but somewahat less than successfully.
You can't have it both ways --- the tool can't be "intelligent" yet too stupid to understand it's own limitations.
If people ask the wrong questions, the "intelligent" response would be, "Sorry, I can't do that".
Maybe the problem here is that this "intelligent" tool is really as dumb as a rock. And it's only a matter of time until lawyers argue this point to a jury in court.
Then the tool should not be doing it --- but it does. And therein is the legal liability.