The rdf:Description start-tag indicates the
start of a description of a resource, and goes on to identify the
resource the statement is about (the subject of the statement) using
the rdf:about attribute to specify the URIref of the subject
resource.
rdf:about is a Production syntaxTerm (not a concept).
<rdf:Description rdf:about="http://www.example.org/index.html">
<exterms:creation-date>August 16, 1999</exterms:creation-date>
</rdf:Description>
An obvious way to talk about any RDF statement
is to say it is a description, and that it is about the
subject of the statement, and this is the way RDF/XML represents the
statement. The property element is nested within the containing
rdf:Description element, indicating that this property applies to
the resource specified in the rdf:about attribute of the
rdf:Description element.