<chart>
 <data>
  <column datatype="TEXT" type="label">
   <e>Label 1</e>
   <e>Label 2</e>
   <e>Label 3</e>
   <e>Label 4</e>
  </column>
  <column id="series1" type="value">
   <e>23</e>
   <e>25</e>
   <e>32</e>
   <e>29</e>
  </column>
  <column id="series2" type="value">
   <e>15</e>
   <e>8</e>
   <e>22</e>
   <e>25</e>
  </column>
 </data>
 <attributes>
  <image width="300" height="200"/>
  <plot>
    <series idRef="series1" name="Series 1"/>
    <series idRef="series2" name="Series 2"/>
  </plot>
  <axes>
   <axis dim="category"/>
   <axis dim="value"/>
   <axis dim="z"/>
  </axes>
 </attributes>
</chart>
