 now invoking this
          parser to do its work. There are a couple of ways to do this. For now,
          we will use the <code class="computeroutput"><span class="identifier">phrase_parse</span></code>
          function. One overload of this function accepts four arguments:
        </p>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
              An iterator pointing to the start of the input
            </li>
<li class="listitem">
              An iterator pointing t