XPath for parent nodes, but excluding their children

Hello All,

I need some help with an XPath issue (this is for an xi:include in an XML doc,
I am not using XLST to transform the XML, so I'm not sure if this is even
possible). I want to retrieve all the parent nodes, but not any of the chilren
nodes:

Example:
<root>
    <parent1>
        <child>
        </child>
    </parent1>
    <parent2>
        <child>
        <child>
    </parent2>
</root>

I want to get some xpath to grab just the parent nodes:

Xpath to retrieve:
<parent1/>
<parent2/>


Does anyone know how to do this with XPath w/o using XSLT to transform the
xml?

TYIA!

-Joel