Filtering duplicate tags

Hi All,

Following is my sample xml file.
I want to filter out similar (duplicated) elements and make a new xml
which has distinct values.
Matching and filtering need to be done based on Attribute on the first
tag,

Ex,
<data name="LBL_Inch"> --> Attribute "LBL_Inch"



<root>
	<data name="LBL_Inch">
		<value>Inch</value>
		<comment>Inches</comment>
	</data>
	<data name="LBL_MM">
		<value>mm</value>
		<comment>MM</comment>
	</data>
	<data name="LBL_MM">
		<value>mm</value>
		<comment>MM</comment>
	</data>
</root>



After transformation I need a xml file like this,

<root>
	<data name="LBL_Inch">
		<value>Inch</value>
		<comment>Inches</comment>
	</data>
	<data name="LBL_MM">
		<value>mm</value>
		<comment>MM</comment>
	</data>
</root>

Please help me on this...

- Thank you all


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