xml parsing escape characters

[Luis P. Mendes]

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I would like to thank everyone for your answers, but I'm not seeing the
light yet!

When I access the url via the Firefox browser and look into the source
code, I also get:

<?xml version="1.0" encoding="utf-8"?>
<string xmlns="http................"><DataSet>
~  <Order>
~    <Customer>439</Customer>
~  </Order>
</DataSet></string>

should I take the contents of the string tag that is text and replace
all '&lt' with '<' and '&gt' with '>' and then read it with xml.minidom?
how to do it?

or should I use another parser that accomplishes the task with no need
to replace the escaped characters?
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