<?xml version='1.0' encoding='UTF-8'?>
<gegl>
  <node operation='gegl:edge-sobel'>
    <params>
      <param name='horizontal'>1</param>
      <param name='vertical'>1</param>
    </params>
  </node>
  <node operation='gegl:load'>
    <params>
      <param name='path'>data/duck.png</param>
    </params>
  </node>
</gegl>