link to Reactome RDF

There is a nice example in WP3305:

<http://rdf.wikipathways.org/Pathway/WP3305_r103040/WP/Interaction/f9921>
        a                              wp:DirectedInteraction , wp:Interaction ;
        dc:source                      "Reactome"^^xsd:string ;
        dcterms:bibliographicCitation  <http://identifiers.org/pubmed/10471499> , <http://identifiers.org/pubmed/14610093> ;
        dcterms:identifier             "R-HSA-427337"^^xsd:string ;
        dcterms:isPartOf               <http://identifiers.org/wikipathways/WP3305_r103040> ;
        wp:isAbout                     <http://rdf.wikipathways.org/Pathway/WP3305_r103040/Interaction/d463d> , <http://rdf.wikipathways.org/Pathway/WP3305_r103040/Interaction/ebfe6> , <http://rdf.wikipathways.org/Pathway/WP3305_r103040/Interaction/f9921> , <http://rdf.wikipathways.org/Pathway/WP3305_r103040/Interaction/b1d02> ;
        wp:participants                <http://identifiers.org/reactome/R-HSA-427343> , <http://identifiers.org/uniprot/Q9UBB5> , <http://identifiers.org/reactome/R-HSA-5226877> ;
        wp:source                      <http://identifiers.org/uniprot/Q9UBB5> , <http://identifiers.org/reactome/R-HSA-5226877> ;
        wp:target                      <http://identifiers.org/reactome/R-HSA-427343> .

Start by reviewing the linked WP3305.ttl example and the repository's current Java conversion flow. The issue does not name a file, test, or entry point, so first clarify what “link to Reactome RDF” should change; completion should be judged against an agreed Reactome link in the generated RDF output.