Copyright © 2002 Cycorp
•Introduction
•Fundamental Expression Types
•Top Level Collections
•Time and Dates
•Spatial Properties and Relations
•Event Types
•Information
•More Content Areas
Survey of
Knowledge Base Content
Information is one of the trickiest things to ontologize (represent in the Knowledge Base) because everything contains some kind of information.  Movies, books, plays, and TV shows are all obvious examples of things that contain information, but the rings in a tree stump and the color of the sky contain information as well.