Our knowledge about concepts and phenomena in the world is hierarchically stored in the B-ROM database. E.g. "piston", "spark plug", etc. are subsets of the concept "engine" of which "car" is a superset. To understand the content of the interaction, VP searches the hierarchical B-ROM database, which it does by detecting on which location in the hierarchy the concept with matching information is stored and by retrieving its associated information.
To reinforce current understanding and ease future navigation, VP also tries to find and store analogy between the ongoing interaction and the stored content in the B-ROM. Based on the same, when a concept or a phenomenon is not understood, VP resorts to finding an analogy for the same to ease the process.