Here is a little set of inconsistent slides about the future (Semantic Web) and the present (Plone) and how you can tie one with another. In a few words : there seems to be need for a universal model for knowledge/RDF caches ; the production/transformation of knowledge and content should go through a workflow ; Plone should ease the implementation of such a workflow. It’s all about some link between knowledge management and content management.
These slides are displayed below but are also available as a Powerpoint presentation.