The present invention is directed to an integrated implementation framework and resulting medium for knowledge retrieval, management, delivery and presentation. The system includes a first server component that is responsible for adding and maintaining domain-specific semantic information and a second server component that hosts semantic and other knowledge for use by the first server component that work together to provide context and time-sensitive semantic information retrieval services to clients operating a presentation platform via a communication medium. Within the system, all objects or events in a given hierarchy are active Agents semantically related to each other and representing queries (comprised of underlying action code) that return data objects for presentation to the client according to a predetermined and customizable theme or "Skin." This system provides various means for the client to customize and "blend" Agents and the underlying related queries to optimize the presentation of the resulting information. The present invention is directed to a framework or medium for knowledge retrieval, management, delivery and/or presentation. The system maintains semantic information and other knowledge to provide retrieval services to clients via a communication medium. Within the system, objects or events in a hierarchy are semantically related to each other, and agents implementing queries return data objects for presentation to the client according to a semantically influenced or determined theme. This system provides various means for the client to customize agents and/or the underlying related queries to optimize the presentation of the resulting information.