One Web or Four: The Semantic Web

an abstraction
- http://www.w3.org/2001/sw/RDFCore/20030123-issues/
a document associated with the abstraction
- http://www.w3.org/2001/sw/RDFCore/20030123-issues/Overview.html
an abstraction
- http://www.w3.org/2001/sw/RDFCore/20030123-issues/#pfps-15
a document fragment associated with that abstraction
- http://www.w3.org/2001/sw/RDFCore/20030123-issues/Overview.html#pfps-15

For example