<nodes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/nodes_file.xsd">

    <node id="o" x="0" y="0"/>
    <node id="a" x="5000" y="0"/>
    <node id="b" x="8000" y="0"/>
    <node id="d" x="9000" y="500"/>
    <node id="x" x="6000" y="1000"/>
    <node id="y" x="8000" y="1000"/>

</nodes>
