<edgeRelations>
  <interval begin="0" end="3600">
      <edgeRelation from="beg" to="beg2right" probability="0.1"/>
      <edgeRelation from="beg" to="middle" probability="0.6"/>
      <edgeRelation from="beg" to="beg2left" probability="0.3"/>
  </interval>
</edgeRelations>
