Code:
<?xml version="1.0"?>
<Query xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" Name="abc" >
  <Grs>
    <Gr Name="a">
      <Cls>
        <Cl Name="b">
          <Properties>
            <Property Name="Fr" ></Property>
...