From c1ef84151c75c520a45a731e2e9b7a6512280487 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rabea=20M=C3=BCller?=
 <42644523+RabeaMue@users.noreply.github.com>
Date: Fri, 17 Apr 2026 08:54:21 +0200
Subject: [PATCH] Add LOD Cloud visualization to underlying concepts episode
 (closes #12)

---
 episodes/02-Wikidata_underlying_concepts.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/episodes/02-Wikidata_underlying_concepts.md b/episodes/02-Wikidata_underlying_concepts.md
index 1493e3d7..68df4f71 100644
--- a/episodes/02-Wikidata_underlying_concepts.md
+++ b/episodes/02-Wikidata_underlying_concepts.md
@@ -55,6 +55,13 @@ but with only three columns – the subject column, the predicate column, and th
 
 ![](fig/Data_Structure_Diagram.jpg){alt='A data structure diagram illustrating a possible connection between a list of triples, represented by a data dictionary, and a graph diagram which visualizes the relationships stipulated by the triples.'}
 
+The scale of linked open data on the web can be visualized in the 
+[Linked Open Data Cloud](https://lod-cloud.net/), which shows the 
+connections between hundreds of open datasets. Note that this 
+visualization is updated regularly, so it will look different over time.
+
+![](https://lod-cloud.net/clouds/lod-cloud.svg){alt='Visualization of the Linked Open Data Cloud showing connections between hundreds of open datasets'}
+
 ## 2\.2 Conceptual foundations: RDF and Triples
 
 The RDF defines a conceptual data model that is based on the idea of