n the example above, three resource objects, named 
rdfs:Resource, rdfs:Class, and rdf:Property, are tested whether they are 
instances of class rdfs:Resource.</p>
<p class="justify"><a id="SWCLOSobject?" name="SWCLOSobject?"></a>Predicate <b>rsc-object-p</b> is prepared for testing whether 
an CLOS object is a resource object or not. It is same as (cl:typep x 
rdfs:Resource) in the semantics but it is faster a bit and simplifies your code. 
Note that <b>object?</b> is used for testing a QName symbol or a n