--- /dev/null
+<?xml version="1.0"?>
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+ <xsl:template match="/">
+ <xsl:copy-of select="site/open_auctions/open_auction[(not(bidder/following::bidder) or not(bidder/preceding::bidder)) or (bidder/following::bidder and bidder/preceding::bidder)]/interval"/>
+ </xsl:template>
+</xsl:stylesheet>
\ No newline at end of file