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-rw-r--r--learn/core.sdm2
1 files changed, 1 insertions, 1 deletions
diff --git a/learn/core.sdm b/learn/core.sdm
index 6979b86..7c60fd8 100644
--- a/learn/core.sdm
+++ b/learn/core.sdm
@@ -12,7 +12,7 @@ module core learn <https://purl.org/learn/core#> is
@skos:prefLabel = [ "Learning Ontology"@en "Læringsontologi"@da ]
@dc:description = "General domain ontology on learning"@en
- @dc:created = @xsd:date(2024-04-26)
+ @dc:created = @xsd:date("2024-04-26")
@dc:creator = <https://dr.jones.dk/me/#me>
@dc:license = <https://spdx.org/licenses/AGPL-3.0-or-later>
@rdf:type = skos:ConceptScheme