Harvest highlighted passages in smart folder?

After having clipped a bunch of articles, websites, etc. into a DT database, I would like to be able to read through them, highlight relevant passages, and have those passages automatically gathered in a smart folder, each with breadcrumbs back to the parent document. Is this possible? Or is there some other way of accomplishing the basic goal?

Relatively recent user, so apologies if the answer’s obvious.

Thanks, David