The element of the Semantic Web
![arrow tail, body and head are l are subject, property and value.](../../../DesignIssues/diagrams/spv-arrow.png)
- Can share subject, property and/or value across websites using URIs
- Can represent any relational or tree-like data
- Can be encoded in XML
- Simplicity and mathematical consistency
- This is called Resource Description Framework (RDF)