diff --git a/seeds/ontology.yaml b/seeds/ontology.yaml
index a6e279d..a5e86fe 100644
--- a/seeds/ontology.yaml
+++ b/seeds/ontology.yaml
@@ -858,10 +858,10 @@ relationship_types:
     description: Check raised a signal.
   about:
     inverse: subject-of
-    source: signal
+    source: entity
     target: entity
-    cardinality: many-to-one
-    description: Signal concerns an entity.
+    cardinality: many-to-many
+    description: Entity concerns (or is about) another entity.
   classifies:
     inverse: classified-as
     source: classification