diff --git a/data-extraction/src/js/createGraph.ts b/data-extraction/src/js/createGraph.ts
index 153033c..cd75c8d 100644
--- a/data-extraction/src/js/createGraph.ts
+++ b/data-extraction/src/js/createGraph.ts
@@ -34,7 +34,7 @@ export function createGraph<T>(
 
 		let id = ids.get(item);
 		if (!id) {
-			id = (idCounter++).toString();
+			id = `hediet.de/id-${idCounter++}`;
 			ids.set(item, id);
 		}
 		return id;