e">returns <a 
  href="http://www.franz.com/support/documentation/8.0/ansicl/glossary/t.htm#true">true</a>, 
  if <i>symbol</i> is a symbol and its value is an instance of resource. 
</div></p><br/>
<h3>5.2 &nbsp;rdf:type and rdfs:subClassOf</h3>
<p><b>Figure 5.1</b> depicts class-instance relations described with rdf:type 
property. Class-subclass relations are described with rdfs:subClassOf property, 
and property-subproperty relations are described with rdfs:subPropertyOf in RDFS 
vocabulary. </p>
<p>To 