<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/TR/WD-xsl">

<xsl:template match="/">

  The scientific class is:
  <xsl:apply-templates select="//class" />
  <br />
  There species of that class is:
  <xsl:apply-templates select="//species" />
  <br />
  This animal says: 
  <xsl:apply-templates select="//speech" /> 
  <br />

</xsl:template>

<xsl:template match="//class">
   <xsl:value-of />
</xsl:template>

<xsl:template match="//species">
   <xsl:value-of />
</xsl:template>

<xsl:template match="//speech">
   <xsl:value-of />
</xsl:template>

</xsl:stylesheet>