an><span class="nv">&lt;http://www.w3.org/2001/XMLSchema#&gt;</span><span class="w"> </span><span class="p">.</span>

<span class="p">:</span><span class="nt">completionDate</span> <span class="kt">a</span> <span class="nn">owl</span><span class="p">:</span><span class="nt">DatatypeProperty</span> <span class="p">;</span>
    <span class="nn">rdfs</span><span class="p">:</span><span class="nt">comment</span> <span class="s">&quot;It is a property of the service class. It indicates the date of completion of 