For those who are confused (many of the posts currently appear to be), this seems like it is an attempt to semantic-ize Wikipedia-style definitions. For exampl

For those who are confused (many of the posts currently appear to be), this seems like it is an attempt to semantic-ize Wikipedia-style definitions. For example, representing a term as: Earth "is a" planet "belongs to" the solar system, "has" [properties X, Y, Z]. This has applications in natural language processing and other types of artificial intelligence (for example, within a particular niche, it could be useful in an expert system). Think about this type of thing as a complex graph representing "knowledge" in some abstract but still useful sense.