From 77eb18c1a386be4743f6f7326b4cc12ce96ceeb6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Olov=20Ylinenp=C3=A4=C3=A4?= <olov.ylinenpaa@kb.se>
Date: Mon, 19 Aug 2024 17:29:40 +0200
Subject: [PATCH 1/2] Add :SingleItem

---
 source/vocab/display.jsonld |  4 +++-
 source/vocab/items.ttl      | 11 +++++++++--
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/source/vocab/display.jsonld b/source/vocab/display.jsonld
index 7073821e..e102e6de 100644
--- a/source/vocab/display.jsonld
+++ b/source/vocab/display.jsonld
@@ -767,7 +767,9 @@
             "subject",
             "summary",
             "immediateAcquisition",
-            "availability"
+            "availability",
+            { "inverseOf": "itemUsed" },
+            { "inverseOf": "hasComponent" }
           ]
         },
         "StructuredValue": {
diff --git a/source/vocab/items.ttl b/source/vocab/items.ttl
index 2c22680f..3c663a07 100644
--- a/source/vocab/items.ttl
+++ b/source/vocab/items.ttl
@@ -33,6 +33,12 @@
     owl:equivalentClass bf2:Item, sdo:Product, holding:Item .
     #TODO?: owl:equivalentClass [ owl:unionOf (sdo:Product sdo:Offer) ] ;
 
+:SingleItem a owl:Class ;
+    rdfs:subClassOf :Item ;
+    :category marc:none ;
+    owl:equivalentClass sdo:IndividualProduct ;
+    rdfs:label "Single item"@en, "Exemplar"@sv .
+
 :itemOf a owl:ObjectProperty ;
     rdfs:label "Holding for"@en, "bestånd på"@sv ;
     owl:inverseOf :hasItem;
@@ -210,7 +216,7 @@
 :itemUsed a owl:ObjectProperty ;
     rdfs:label "Item used"@en, "Exemplaret som använts"@sv ;
     rdfs:domain :ProvisionActivity ;
-    rdfs:range :Item .
+    rdfs:range :SingleItem .
 
 :nonCodedLocationQualifier a owl:DatatypeProperty;
     rdfs:label "location qualifier"@en, "precisering av hyllplacering"@sv;
@@ -248,9 +254,10 @@
 
 :hasComponent a owl:ObjectProperty ;
     rdfs:label "has component"@en, "har komponent"@sv ;
-    :category :compositional ;
+    :category :compositional, :integral;
     rdfs:subPropertyOf bf2:hasPart ;
     rdfs:domain :Item ;
+    owl:inverseOf :componentOf ;
     # TODO: rdfs:domain :SomeItems ;
     rdfs:range :Item ;
     skos:note "Retained from BF1 to enable an Item entity to describe several Items within the same holding. (Historically due to local variations in Libris MARC21-spec.)"@en .

From 767457418af7322e59ff5d99b4d1510279f027ab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Olov=20Ylinenp=C3=A4=C3=A4?=
 <51744858+olovy@users.noreply.github.com>
Date: Tue, 20 Aug 2024 14:30:16 +0200
Subject: [PATCH 2/2] Update source/vocab/items.ttl

---
 source/vocab/items.ttl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/vocab/items.ttl b/source/vocab/items.ttl
index 3c663a07..70a1220b 100644
--- a/source/vocab/items.ttl
+++ b/source/vocab/items.ttl
@@ -216,7 +216,7 @@
 :itemUsed a owl:ObjectProperty ;
     rdfs:label "Item used"@en, "Exemplaret som använts"@sv ;
     rdfs:domain :ProvisionActivity ;
-    rdfs:range :SingleItem .
+    rdfs:range :Item .
 
 :nonCodedLocationQualifier a owl:DatatypeProperty;
     rdfs:label "location qualifier"@en, "precisering av hyllplacering"@sv;