I'm having this XML document with namespaces and I want to extract some nodes using XPath.

Here's the document:

<ArrayOfAnyType xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://tempuri.org/">
  <anyType xsi:type="Document">
    <Id>5</Id>
    <Title>T1</Title>
  </anyType>

  <anyType xsi:type="Document">
    <Id>15</Id>
    <Title>T15</Title>
  </anyType>
</ArrayOfAnyType>

What's the XPath expression going to be if I want to extract all "anyType" elements with xsi:type="Document"?

I've tried this: 

//anyType[@xsi:type="Document"]

and it doesn't work:

xml xpath namespaces
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