File: Data.xml
<?xml version = "1.0"?>
<product>
<books>
<book>
Getting Started with Microsoft Visual C++
</book>
<book>C How to Program</book>
</books>
</product>
File: Transform.xslt
<?xml version = "1.0"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/product">
<xsl:value-of
select="name(//parent::node()[. = 'C How to Program'])" />
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?>book