Извлечь значение узла элемента через XPath?

<xsl:output method = "xml" indent = "yes"/>
    <xsl:template match = "data">
        <xsl:for-each-group select = "item" group-by = "values/*[language = 'EN']">
          <xsl:for-each select = "current-group()">
             <xsl:element name = "{current-group()/values/*[language = 'EN']/local-name()}">
                 <language>
                     <xsl:value-of select = "descendant::language[text() = 'EN']"/>
                 </language>
                 <txt>
                     <xsl:value-of select = "current-group()/values/*[language = 'EN']/text"/>
                 </txt>
             </xsl:element>
          </xsl:for-each>
        </xsl:for-each-group>
    </xsl:template>
You may do like this

<?xml version = "1.0" encoding = "utf-8"?>
<xsl:stylesheet xmlns:xsl = "http://www.w3.org/1999/XSL/Transform" 
            xmlns:exsl = "http://exslt.org/common" version = "1.0">

<xsl:output indent = "yes" />
<xsl:strip-space elements = "*" />

<xsl:template match = "/">
    <xsl:variable name = "ENelements">
        <xsl:for-each select = "/data/item/values/*[language='EN']">
           <element name = "{local-name()}"><xsl:value-of select = "text" /></element>
        </xsl:for-each>
    </xsl:variable>

    <table id = "123">   
        <tgroup cols = "2">
            <colspec colname = "c1" colnum = "1" colwidth = "1.0*"/>
            <colspec colname = "c2" colnum = "2" colwidth = "1.0*"/>
            <thead>
                <row>
                    <entry>Name</entry>
                    <entry>Values</entry>
                </row>
            </thead>
            <tbody>
                <xsl:for-each select = "exsl:node-set($ENelements)/*">
                     <row>
                        <entry>
                            <ph><xsl:value-of select = "@name" /></ph>
                        </entry>
                        <entry><xsl:value-of select = "." /></entry>
                    </row>
                </xsl:for-each>
            </tbody>
        </tgroup>
    </table>
</xsl:template>

</xsl:stylesheet>

http://xsltfiddle.liberty-development.net/jyRYYig

AFAICT, это может быть просто:

XSLT 1.0

<xsl:stylesheet version = "1.0" 
xmlns:xsl = "http://www.w3.org/1999/XSL/Transform">
<xsl:output method = "xml" version = "1.0" encoding = "UTF-8" indent = "yes"/>

<xsl:template match = "/data">
    <table id = "123">   
        <tgroup cols = "2">
            <colspec colname = "c1" colnum = "1" colwidth = "1.0*"/>
            <colspec colname = "c2" colnum = "2" colwidth = "1.0*"/>
            <thead>
                <row>
                    <entry>Name</entry>
                    <entry>Values</entry>
                </row>
            </thead>
            <tbody>
                <xsl:for-each select = "item">
                    <xsl:variable name = "elem" select = "values/*[language='EN']" />
                    <row>
                        <entry>
                            <ph>
                                <xsl:value-of select = "name($elem)"/>
                            </ph>
                        </entry>
                        <entry>
                            <xsl:value-of select = "$elem/text"/>
                        </entry>
                    </row>
                </xsl:for-each>
            </tbody>
        </tgroup>
    </table>
</xsl:template>

</xsl:stylesheet>