		Once <code>close()</code> has been called, further calls to <code>next()</code> cause an exception.
						The <code>close()</code> function MUST always be called unless the iterator has already been walked to completion.
					</li>
				</ul>
				<p>
					The following JavaScript snippet assumes that the current <a>data graph</a> is represented by
					the variable <code>$data</code> and gets the first label of a given resource
					where the label is an english literal.
				</p>
				<pre class="example-js