<a:addressBook xmlns:a=“www.example.com/addressBook”>
<a:card xmlns="http://www.example.com/address"> <name>foo</name><email>bar</email> </a:card>
</a:addressBook>
<a:addressBook xmlns:a=“www.example.com/addressBook”>
<a:card xmlns="http://www.example.com/address"> <name>foo</name><email>bar</email> </a:card>
</a:addressBook>