Detail: RDFizing and Extending OGC's GML

<Bridge>
  <centerLine rdf:parseType="Collection">
    <gml:Point><gml:pos>400 400</gml:pos></gml:Point> <!-- lets find real coords -->
    <gml:Point><gml:pos>500 500</gml:pos></gml:Point> <!-- I added 'Point' for RDF syntax-->
    <gml:Point><gml:pos>600 600</gml:pos></gml:Point> 
    <gml:Point><gml:pos>700 800</gml:pos></gml:Point> 
  </centerLine>

  <type>suspension</type>
  <name>Clifton Suspension Bridge</name>
  <description>The Clifton Suspension Bridge is a suspension bridge spanning the Avon Gorge and linking Clifton in Bristol to Leigh Woods in North Somerset. Designed by Isambard Kingdom Brunel, it is a distinctive landmark that is often used as a symbol of Bristol. It is a grade I listed building.</description>
   <foaf:depiction>
     <foaf:Image rdf:about="http://upload.wikimedia.org/wikipedia/en/8/83/Suspension.bridge.bristol.arp.750pix.jpg">
       <dc:title>Clifton Suspension Bridge over the River Avon in Bristol, England.</dc:title>
       <dc:description>Clifton Suspension Bridge over the River Avon in Bristol, England. The bridge was designed by the great Victorian engineer Isambard Kingdom Brunel. Although not visible here, the Clifton Gorge below the bridge is about 240 feet deep (73 metres). Taken by Adrian Pingstone in October 2003 and released to the public domain.</dc:description>
       <cc:license rdf:resource="http://creativecommons.org/licenses/publicdomain/"/>
       <!-- we could have included RDF here to list the things this license permits -->
       <rdfs:seeAlso rdf:resource="http://www.kanzaki.com/test/exif2rdf?u=http%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fen%2F8%2F83%2FSuspension.bridge.bristol.arp.750pix.jpg" dc:format="application/rdf+xml"/> <!-- EXIF photo data bulky, can get it elsewhere -->
     </foaf:Image>
   </foaf:depiction>        
   <foaf:isPrimaryTopicOf rdf:resource="http://en.wikipedia.org/wiki/Clifton_Suspension_Bridge"/>
   <foaf:maker>
    <foaf:Person rdf:nodeID="ikb">
      <foaf:name>Isambard Kingdom Brunel</foaf:name>
      <foaf:gender>male</foaf:gender>
      [....]