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<?xml version="1.0" encoding="utf-8"?>
<rdf:RDF
  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
/>rgrp@gimmel:~/hgroot/ckan$ curl -L -H "Accept: application/rdf+xml" http://ckan.net/package/2000-us-census-rdf
<?xml version="1.0" encoding="utf-8"?>
<rdf:RDF
  xmlns:foaf="http://xmlns.com/foaf/0.1/"
  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
  xmlns:doap="http://usefulinc.com/ns/doap#"
  xmlns:dc="http://purl.org/dc/terms/"
  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
  xmlns:scovo="http://purl.org/NET/scovo#"
>
  <scovo:Dataset rdf:about="http://ckan.net/package/2000-us-census-rdf">
    <rdfs:label>The 2000 US Census: 1 Billion RDF Triples</rdfs:label>
    <dc:creator>
      <foaf:Person rdf:about="http://ckan.net/package/2000-us-census-rdf#author">
        <rdfs:label>http://razor.occams.info/</rdfs:label>
        <foaf:name>http://razor.occams.info/</foaf:name>
      </foaf:Person>
    </dc:creator>
    <doap:category rdf:resource="http://semantic.ckan.net/tags/us"/>
    <doap:category rdf:resource="http://semantic.ckan.net/tags/linkeddata"/>
    <doap:category rdf:resource="http://semantic.ckan.net/tags/demographics"/>
    <doap:category rdf:resource="http://semantic.ckan.net/tags/format-rdf"/>
    <doap:category rdf:resource="http://semantic.ckan.net/tags/census"/>
    <doap:category rdf:resource="http://semantic.ckan.net/tags/rdf"/>
    <doap:category rdf:resource="http://semantic.ckan.net/tags/data"/>
    <doap:category rdf:resource="http://semantic.ckan.net/tags/statistics"/>
    <doap:category rdf:resource="http://semantic.ckan.net/tags/lod"/>
    <doap:category rdf:resource="http://semantic.ckan.net/tags/population"/>
    <dc:title>The 2000 US Census: 1 Billion RDF Triples</dc:title>
    <dc:rights>Non-OKD Compliant::Creative Commons Non-Commercial (Any)</dc:rights>
    <dc:description>2000 U.S. Census converted into over a billion RDF triples.

Population statistics at various geographic levels, from the U.S. as a whole, down through states, counties, sub-counties (roughly, cities and incorporated towns)

Notes: also found in the of SPARQL Endpoints.

From home page:

&gt; * For the detailed Census statistics, you'll have to download the raw Census data files from the Census Bureau, my Perl script and the patch file below and run it yourself because the files are too big for me to offer as a download!
&gt; 
&gt; * The data and scripts can be reused under Creative Commons Attribution-NonCommercial-ShareAlike.
</dc:description>
    <foaf:maker rdf:resource="http://ckan.net/package/2000-us-census-rdf#author"/>
    <doap:download-page rdf:resource="http://www.rdfabout.com/demo/census/"/>
    <foaf:homepage rdf:resource="http://www.rdfabout.com/demo/census/"/>
  </scovo:Dataset>