removing namespaces with XML::Twig?

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I have XML in the form:

<a:houses>
    <a:house>
        <a:sq_footage/>
        <a:address/>
    </a:house>
    <a:house>
        <a:sq_footage/>
        <a:address/>
    </a:house>
</a:houses>
[download]

I need to strip off the namespace a. The XML::Twig CPAN page talks of mapping namespaces, but I am unclear as to whether this will solve my problem here.

Any insight shared would be appreciated. Thanks!

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