Ontology files are optionally accompanied by description files, those have the same basename, but the ".description" extension.

@prefix dsc: <http://www.tracker-project.org/temp/dsc#> .

<virtual-ontology-uri:30-nie.ontology> a dsc:Ontology ;
	dsc:title "Example ontology" ;
	dsc:description "A little bit of this and that." ;
	dsc:upstream "http://www.example.org/ontologies";
	dsc:author "John doe, &lt;john@example.org&gt;";
	dsc:editor "Jane doe, &lt;jane@example.org&gt;";
	dsc:gitlog "http://git.example.org/cgit/tracker/log/example.ontology";
	dsc:contributor "someone else, &lt;some1@example.org&gt;";

	dsc:localPrefix "ex" ;
	dsc:baseUrl "http://www.example.org/ontologies/ex#";
	dsc:relativePath "./10-ex.ontology" ;

	dsc:copyright "All rights given away".