o">)</span>
f1<span class="o">(</span>B<span class="o">)</span>
f2<span class="o">(</span>B<span class="o">)</span>
f1<span class="o">(</span>C<span class="o">)</span>
f2<span class="o">(</span>C<span class="o">)</span>
f3<span class="o">(</span>B<span class="o">)</span>
f3<span class="o">(</span>C<span class="o">)</span>
stopped</pre></section></section><section id="GraphPipelineReference"><h2><a href="#GraphPipelineReference">Reference</a></h2><p>We have applied the graph processing pipeline technique to 