ok i have this xml

```
<roots>
<root>
    <name>first</name>
    <item type='test'><something>A</something></item>
    <item type='test'><something>B</something></item>
    <item type='test'><something>C</something></item>
    <item type='test'><something>A</something></item>
    <item type='other'><something>A</something></item>
    <item type='test'><something>B</something></item>
    <item type='other'><something>D</something></item>

</root>
<root>
<name>second</name>
    <item type='test'><something>E</something></item>
    <item type='test'><something>B</something></item>
    <item type='test'><something>F</something></item>
    <item type='test'><something>A</something></item>
    <item type='other'><something>A</something></item>
    <item type='test'><something>B</something></item>
    <item type='other'><something>D</something></item>

</root>

</roots>

```

now i need to get the unique values of each root node so far i have 

```
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output indent="yes" method="text"/>
  <xsl:key name="item-by-value" match="something" use="."/>
  <xsl:key name="rootkey" match="root" use="name"/>

  <xsl:template match="/">
    <xsl:for-each select="key('rootkey','second')">
      <xsl:for-each select="item/something">
        <xsl:if test="generate-id() = generate-id(key('item-by-value', normalize-space(.)))">
          <xsl:value-of select="."/>
        </xsl:if>
      </xsl:for-each> 
    </xsl:for-each>
  </xsl:template>

</xsl:stylesheet>

```

if i use "First" as the key to get only the first root i get a good result ABCD

how ever if i use "second" i only get EF but i need the result to be ABDFE