n class="n">parents_ann</span><span class="p">[</span><span class="n">a</span><span class="p">]</span> <span class="o">=</span> <span class="n">parents_opt</span>  
                <span class="n">causal_prediction</span><span class="p">[</span><span class="n">a</span><span class="p">]</span> <span class="o">=</span> <span class="n">results_opt</span>
                <span class="n">links_ann</span><span class="p">[</span><span class="n">a</span><span class="p">]</span> <span class="o">=</span> <span class=