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File: Data.xml
<?xml version="1.0"?>
<addressbook>
<address>
<name>
<title>Mr.</title>
<first-name>A</first-name>
<last-name>B</last-name>
</name>
<street>1234 Main Street</street>
<city>Vancouver</city>
<state>WI</state>
<zip>48392</zip>
</address>
</addressbook>
File: Transform.xslt
<?xml version="1.0"?>
<xsl:stylesheet version="2.0"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text"/>
<xsl:template match="/">
<xsl:variable name="sortedCities" as="xs:string*">
<xsl:perform-sort>
<xsl:sort select="."/>
<xsl:sequence select="addressbook/address/city"/>
</xsl:perform-sort>
</xsl:variable>
<xsl:text>Our customers live in these cities:

</xsl:text>
<xsl:value-of select="$sortedCities" separator="
"/>
</xsl:template>
</xsl:stylesheet>
Output:
Our customers live in these cities:
Vancouver
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