From 9d1d466014997b4c5cda11b181d32ec8766b1f49 Mon Sep 17 00:00:00 2001
From: Cyber MacGeddon <cybermaggedon@gmail.com>
Date: Thu, 5 Mar 2026 19:16:01 +0000
Subject: [PATCH] Fix missing labels

---
 .../trustgraph/provenance/namespaces.py       | 12 ++++++++++++
 .../trustgraph/provenance/vocabulary.py       | 19 +++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/trustgraph-base/trustgraph/provenance/namespaces.py b/trustgraph-base/trustgraph/provenance/namespaces.py
index 9801f34c..b207b38f 100644
--- a/trustgraph-base/trustgraph/provenance/namespaces.py
+++ b/trustgraph-base/trustgraph/provenance/namespaces.py
@@ -28,6 +28,18 @@ RDF_TYPE = RDF + "type"
 RDFS = "http://www.w3.org/2000/01/rdf-schema#"
 RDFS_LABEL = RDFS + "label"
 
+# Schema.org namespace
+SCHEMA = "https://schema.org/"
+SCHEMA_SUBJECT_OF = SCHEMA + "subjectOf"
+SCHEMA_DIGITAL_DOCUMENT = SCHEMA + "DigitalDocument"
+SCHEMA_DESCRIPTION = SCHEMA + "description"
+SCHEMA_KEYWORDS = SCHEMA + "keywords"
+SCHEMA_NAME = SCHEMA + "name"
+
+# SKOS namespace
+SKOS = "http://www.w3.org/2004/02/skos/core#"
+SKOS_DEFINITION = SKOS + "definition"
+
 # TrustGraph namespace for custom predicates
 TG = "https://trustgraph.ai/ns/"
 TG_REIFIES = TG + "reifies"
diff --git a/trustgraph-base/trustgraph/provenance/vocabulary.py b/trustgraph-base/trustgraph/provenance/vocabulary.py
index 0124e0cd..47164da8 100644
--- a/trustgraph-base/trustgraph/provenance/vocabulary.py
+++ b/trustgraph-base/trustgraph/provenance/vocabulary.py
@@ -16,6 +16,9 @@ from . namespaces import (
     PROV_WAS_DERIVED_FROM, PROV_WAS_GENERATED_BY,
     PROV_USED, PROV_WAS_ASSOCIATED_WITH, PROV_STARTED_AT_TIME,
     DC_TITLE, DC_SOURCE, DC_DATE, DC_CREATOR,
+    SCHEMA_SUBJECT_OF, SCHEMA_DIGITAL_DOCUMENT, SCHEMA_DESCRIPTION,
+    SCHEMA_KEYWORDS, SCHEMA_NAME,
+    SKOS_DEFINITION,
     TG_REIFIES, TG_PAGE_COUNT, TG_MIME_TYPE, TG_PAGE_NUMBER,
     TG_CHUNK_INDEX, TG_CHAR_OFFSET, TG_CHAR_LENGTH,
     TG_CHUNK_SIZE, TG_CHUNK_OVERLAP, TG_COMPONENT_VERSION,
@@ -57,6 +60,20 @@ DC_PREDICATE_LABELS = [
     _label_triple(DC_CREATOR, "creator"),
 ]
 
+# Schema.org labels
+SCHEMA_LABELS = [
+    _label_triple(SCHEMA_SUBJECT_OF, "subject of"),
+    _label_triple(SCHEMA_DIGITAL_DOCUMENT, "Digital Document"),
+    _label_triple(SCHEMA_DESCRIPTION, "description"),
+    _label_triple(SCHEMA_KEYWORDS, "keywords"),
+    _label_triple(SCHEMA_NAME, "name"),
+]
+
+# SKOS labels
+SKOS_LABELS = [
+    _label_triple(SKOS_DEFINITION, "definition"),
+]
+
 # TrustGraph predicate labels
 TG_PREDICATE_LABELS = [
     _label_triple(TG_REIFIES, "reifies"),
@@ -97,5 +114,7 @@ def get_vocabulary_triples() -> List[Triple]:
         PROV_CLASS_LABELS +
         PROV_PREDICATE_LABELS +
         DC_PREDICATE_LABELS +
+        SCHEMA_LABELS +
+        SKOS_LABELS +
         TG_PREDICATE_LABELS
     )