span class="n">unit</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
        <span class="n">pos</span> <span class="o">=</span> <span class="n">features</span><span class="o">.</span><span class="n">pos</span>
        <span class="n">analysis</span> <span class="o">=</span> <span class="n">features</span><span class="o">.</span><span class="n">expression</span>

        <span class="k">if</span> <span class="n">analysis</span> <span class="ow">and</span> <span class="p">(</sp