RDF::Redland is the Perl wrapper around the RDF Redland libraries. At the Austrian Research Centers Seibersdorf we (actually Lara Spendier) created a first version of RDF::Redland::DIG which provides a DIG reasoner backend for Redland.
DIG is an XML-based protocol applications can use to talk to a reasoner process. In the first steps you will have to transport via DIG your facts and your rules to the reasoner process. Once a knowledge base is established there, you can query the reasoner for certain derived facts.
It has been tested with Pellet and FaCT.