<?xml version="1.0" encoding="UTF-8"?>

<xsl:transform version="1.0" 
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
  xmlns:news="http://www.dailyplanet.com/NS/News"
  xsi:schemaLocation="http://www.dailyplanet.com/NS/News News.xsd"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>

  <xsl:output method="text" />
  <xsl:strip-space elements="*" />

  <xsl:template match="text ()" />
  
  <xsl:template match="//news:Article[@xsi:type='Gossip']//news:Field[@xsi:type!='Person']" >
<xsl:text>ERROR:  Gossip article containing non-Person-type Field.
  Headline: </xsl:text><xsl:value-of select="ancestor::news:Article/news:Headline" /><xsl:text>
  Field:    </xsl:text><xsl:copy-of select="." /><xsl:text>
</xsl:text>
  </xsl:template>
  
</xsl:transform>