Manifest.rdfis loaded (in this order of preference).
Declared namespaces are added to the rdf-db namespace list.
Encountered ontologies are added to a private database of
rdf_list_library.pl. Each ontology is given an
identifier, derived from the basename of the URL without the
extension. This, using the declaration below, the identifier of the
declared ontology is
<wn-basic> a void:Dataset ; dcterms:title "Basic WordNet" ; ...