p9fj35fl6/Gazebo_exercise/gazebo7_7.14.0_exercise/worlds/willowgarage.world

<?xml version="1.0" ?>
<sdf version="1.5">
  <world name="default">
    <include>
      <uri>model://ground_plane</uri>
    </include>
    <include>
      <uri>model://sun</uri>
    </include>
    <include>
      <uri>model://willowgarage</uri>
    </include>
  </world>
</sdf>