In General, How Do You *Remove* Imported XML Content?

[kay9]

I used the Wordpress importer (inside the admin area under Tools --> Import) to import a Genesis child theme's xml file (sample posts, sample comments, etc.) when I was playing around with Genesis and a couple of child themes.

Now I just want to get rid of all of it and start over with a clean WP installation (default everything, as if I'd just installed WP and no special themes or anything).

Problem is, I can't figure out where the xml file data that I imported is actually KEPT on the server, so I can delete it. It's still showing (sample posts, sample comments, etc.)

I've deleted the Genesis theme, and all Genesis child themes, but the sample comments and posts are still showing.

Sorry for the dumb. I did search for "how to delete imported XML content" and nothing came up anywhere. Maybe no one ever backs up this far. Heh.

Thanks for any help!