# Worked SPARQL Update examples for this entity's graph.
#
# Neither is applied by this tool — the export is a description, not a
# migration. They are here because both transformations encode a decision this
# engine already made elsewhere (see BHE-DES-RDF-001 Phase 6).
#
# PROCESSOR WARNING: rdflib 7.6 silently drops the second operation of this
# request. Measured, not assumed: operation 2 alone rewrites the graph, and so
# does the pair in the opposite order, but `1 ; 2` leaves the graph untouched
# — no error, no warning. Run the two separately if your processor is rdflib.
# The ordering below is the one that works there.
#
# Generated by the Schema Engine (BHE-DES-RDF-001 Phase 9).

PREFIX schema: <http://schema.org/>
PREFIX rdf:    <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX skos:   <http://www.w3.org/2004/02/skos/core#>
PREFIX owl:    <http://www.w3.org/2002/07/owl#>

# 1. Promote a Wikidata sameAs to owl:sameAs.
#    schema:sameAs is a soft "see also"; owl:sameAs licenses a reasoner to
#    merge every statement about both nodes. The export deliberately makes the
#    weaker claim, because it is true of every sameAs value including profile
#    URLs. It is only safe to strengthen for identifiers that name the thing
#    itself, which is what the FILTER restricts this to.
DELETE { ?node schema:sameAs ?wikidata }
INSERT { ?node owl:sameAs   ?wikidata }
WHERE  {
  ?node schema:sameAs ?wikidata .
  FILTER (STRSTARTS(STR(?wikidata), "https://www.wikidata.org/"))
} ;

# 2. Bridge the schema.org terms into SKOS.
#    The concept scheme already does this at export time; run this instead if
#    you loaded only the page graphs and want the thesaurus view.
INSERT { ?term a skos:Concept }
WHERE  { ?term a schema:DefinedTerm }