<?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">
  <graph id="G" edgedefault="directed">
    <node id="n0">
      <port name="North"/>
      <port name="South"/>
      <port name="East"/>
      <port name="West"/>
    </node>
    <node id="n1">
      <port name="North"/>
      <port name="South"/>
      <port name="East"/>
      <port name="West"/>
    </node>
    <node id="n2">
      <port name="NorthWest"/>
      <port name="SouthEast"/>
    </node>
    <node id="n3">
      <port name="NorthEast"/>
      <port name="SouthWest"/>
    </node>
    <edge source="n0" target="n3" sourceport="North" targetport="NorthEast"/>
    <hyperedge>
       <endpoint node="n0" port="North"/>
       <endpoint node="n1" port="East"/>
       <endpoint node="n2" port="SouthEast"/>
     </hyperedge>
  </graph>
</graphml>
