Utility Relations; “Layer 1” Description about description
[http://www.w3.org/People/Lassila] ---Author--> "Ora Lassila”
[X] ---InstanceOf--> [RDF:Property]
[X] ---PropName----> [Author]
[X] ---PropObj-----> [http://www.w3.org/People/Lassila]
[X] ---Value-------> "Ora Lassila"
That is, a node X and four new triples are added:
{InstanceOf, [X], [RDF:Property]}
{PropName, [X], [Author]}
{PropObj, [X], [http://www.w3.org/People/Lassila]}
{Value, [X], "Ora Lassila"}