General assertions in RDF (Do we always have to be specific?)

Hi all,

Is there a way to encode _general_ statements in RDF? Statements like:
- "All pages from google.com are copyright by Google, Inc."
- "Pages from http://craiglist.org/denver/* are about Denver?"

I tried the following, but I doubt it's valid RDF, and Firefox choked
on it:

  <item RDF:about="http://*.craigslist.org/denver/*"
dc:subject="denver" />

I'm trying to switch my application's data representation from
homegrown XML to RDF, but I can't find a clean way to record this sort
of general data.

Any RDF experts out there know a way, a workaround, or if it's possible
at all?

Thanks in advance,

-stan