<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
         http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
  <key id="type" for="node" attr.name="type" attr.type="boolean">
    <default>TRUE</default>
  </key>
  <key id="gender" for="node" attr.name="gender" attr.type="string">
    <default>male</default>
  </key>
  <key id="age" for="node" attr.name="age" attr.type="int">
    <default>20</default>
  </key>
  <key id="retired" for="node" attr.name="retired" attr.type="boolean">
    <default>FALSE</default>
  </key>
  <graph id="G" edgedefault="directed">
    <node id='p1'><data key='type'>FALSE</data><data key='age'>30</data></node>
    <node id='o1'><data key='gender'>female</data></node>
    <node id='o2'></node>
    <edge id='e1' source='p1' target='o1'></edge>
    <edge id='e2' source='p1' target='o2'></edge>
  </graph>
</graphml>
