title: Set default value to property with SPIN
body: <p>I am new to SPIN. I wonder if it makes sense to use it for the following purpose. Say I have the following class hierarchy:</p>
  
  <pre><code>ex:Vehicle
   ex:Car
     ex:Sedan
  </code></pre>
  
  <p>Some classes have the property <code>owl:equivalenClass</code> set to some value, for example:</p>
  
  <pre><code>ex:Vehicle
   owl:equivalentClass wd:MeanOfTransportation 
  ex:Sedan
    owl:equivalentClass wd:Sedan 
  </code></pre>
  
  <p>In the case <code>owl:equivalentClass</code> is not set to a value, it should take the value of it's parent class. In the above example:</p>
  
  <pre><code>ex:Car
    owl:equivalentClass wd:MeanOfTransportation 
  </code></pre>
  
  <p>Can this be accomplished with SPIN, in my case using TopBraid?</p>