rdf-ttl-002

The pipeline

<p:declare-step xmlns:cx="http://xmlcalabash.com/ns/extensions" xmlns:p="http://www.w3.org/ns/xproc" name="main" version="3.0">
   <p:import href="https://xmlcalabash.com/ext/library/rdf.xpl"/>
   <p:output port="result"/>
   <p:identity>
      <p:with-input>
         <p:inline content-type="text/turtle">
@base &lt;https://spec.xproc.org/3.0/&gt; .
@prefix rdf: &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt; .
@prefix rdfs: &lt;http://www.w3.org/2000/01/rdf-schema#&gt; .
@prefix dc: &lt;http://purl.org/dc/terms/&gt; .
@prefix xsd: &lt;http://www.w3.org/2001/XMLSchema#&gt; .
@prefix foaf: &lt;http://xmlns.com/foaf/0.1/&gt; .

_:walsh
  foaf:name "Norman Walsh";
  foaf:homepage &lt;https://nwalsh.com/&gt;;
  foaf:weblog &lt;https://so.nwalsh.com/&gt; .

_:berndzen
  foaf:name "Achim Berndzen" .

_:imsieke
  foaf:name "Gerrit Imsieke" .

_:siegel
  foaf:name "Erik Siegel" .

&lt;https://xproc.org/&gt;
  dc:title "XProc";
  dc:type &lt;http://purl.org/dc/dcmitype/Collection&gt; .

&lt;xproc/&gt;
  dc:title "XProc 3.0: An XML Pipeline Language";
  dc:date "2022-09-12"^^xsd:date;
  dc:type &lt;http://purl.org/dc/dcmitype/Text&gt;;
  dc:hasVersion "3.0";
  dc:isPartOf &lt;https://xproc.org/&gt;;
  dc:contributor _:walsh;
  dc:contributor _:berndzen;
  dc:contributor _:imsieke;
  dc:contributor _:siegel .

&lt;steps/&gt;
  dc:title "XProc 3.0: Standard Step Library";
  dc:date "2022-09-12"^^xsd:date;
  dc:type &lt;http://purl.org/dc/dcmitype/Text&gt;;
  dc:hasVersion "3.0";
  dc:isPartOf &lt;https://xproc.org/&gt;;
  dc:contributor _:walsh;
  dc:contributor _:berndzen;
  dc:contributor _:imsieke;
  dc:contributor _:siegel .
      </p:inline>
      </p:with-input>
   </p:identity>
   <p:cast-content-type name="first" content-type="application/rdf+xml"/>
   <p:identity>
      <p:with-input>
         <p:document content-type="text/turtle" href="../documents/sample1.ttl"/>
      </p:with-input>
   </p:identity>
   <p:cast-content-type name="second" content-type="application/rdf+xml"/>
   <p:load content-type="text/turtle" href="../documents/sample1.ttl"/>
   <p:cast-content-type name="third" content-type="application/rdf+xml"/>
   <p:wrap-sequence wrapper="wrapper">
      <p:with-input pipe="@first @second @third"/>
   </p:wrap-sequence>
</p:declare-step>