example+with+links.xsl

<?xml version="1.0" encoding="UTF-8" ?>

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output method="html" encoding="utf-8" indent="no" media-type="text/html" />

  <xsl:template match="/">
    <xsl:apply-templates select="//api-v1-entities-event-item" />
  </xsl:template>

  <xsl:template match="api-v1-entities-event-item">
    <h1>
      <xsl:element name="a">
        <xsl:attribute name="href">
          <xsl:value-of select="link" />
        </xsl:attribute>
        <xsl:value-of select="title" />
      </xsl:element>
    </h1>
  </xsl:template>

</xsl:stylesheet>

example.xsl

<?xml version="1.0" encoding="UTF-8" ?>

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output method="html" encoding="utf-8" indent="no" media-type="text/html" />

  <xsl:template match="/">
    <xsl:apply-templates select="//api-v1-entities-event-item" />
  </xsl:template>

  <xsl:template match="api-v1-entities-event-item">
    <h1><xsl:value-of select="title" /></h1>
  </xsl:template>

</xsl:stylesheet>