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

<xsl:template match="/entityset">
    <html>
        <body>
            <table border="1">
                <tr>
                    <th>StartSupportgroup</th>
                    <th>Store</th>
                    <th>Phone</th>
                </tr>
                <xsl:apply-templates select="entity"/>
            </table>
        </body>
    </html>
</xsl:template>

<xsl:template match="entity">
    <tr>
        <td><xsl:value-of select="attribute[@code='start_supportGroup']/value"/></td>
        <td><xsl:value-of select="attribute[@code='store']/reference/@name"/></td>
        <td><xsl:value-of select="attribute[@code='phone']/value"/></td>
    </tr>
</xsl:template>

</xsl:stylesheet>