The file bbc.xml is as shown:
<world>
<region id='Europe'>
<country id='de' name='Germany' pop='82000000'/>
<country id='fr' name='France' pop='60000000'/>
</region>
<region id='Asia'>
<country id='cn' name='China' pop='1300000000'/>
</region>
</world>
The XPath expression //country[@id='fr']/@pop find the
country node that has attribute id set to 'fr',
it returns the value of the
pop attribute.
The value returned should be 60 million.