RDF Schema: Declaration of Semantic Terms

<?xml version="1.0"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">

<!-- Declaration of the 'http://my.org/vocab/#title' proprety -->

<rdf:Property rdf:about = "http://my.org/vocab/#title">
  <rdfs:label>Title</rdfs:label>
  <rdfs:comment>The title of a social entity</rdfs:comment>
  <rdfs:isDefinedBy rdf:resource = "http://my.org/vocab/" />
</rdf:Property>

</rdf:RDF>