<?xml version="1.0" encoding="UTF-8"?>
<dolfin>
  <mesh_function type="double" dim="2" size="8">
    <entity index="0" value="1.5"/>
    <entity index="1" value="3.5"/>
    <entity index="2" value="6.5"/>
    <entity index="3" value="1.5"/>
    <entity index="4" value="10.5"/>
    <entity index="5" value="-10.5"/>
    <entity index="6" value="10.5"/>
    <entity index="7" value="10.5"/>
  </mesh_function>
</dolfin>
