diff --git a/code_lists.ttl.graph b/code_lists.ttl.graph
new file mode 100644
index 0000000..dbd4569
--- /dev/null
+++ b/code_lists.ttl.graph
@@ -0,0 +1 @@
+http://data.openbudgets.eu/ontology
diff --git a/components.ttl.graph b/components.ttl.graph
new file mode 100644
index 0000000..dbd4569
--- /dev/null
+++ b/components.ttl.graph
@@ -0,0 +1 @@
+http://data.openbudgets.eu/ontology
diff --git a/concepts.ttl.graph b/concepts.ttl.graph
new file mode 100644
index 0000000..dbd4569
--- /dev/null
+++ b/concepts.ttl.graph
@@ -0,0 +1 @@
+http://data.openbudgets.eu/ontology
diff --git a/metadata.ttl.graph b/metadata.ttl.graph
new file mode 100644
index 0000000..dbd4569
--- /dev/null
+++ b/metadata.ttl.graph
@@ -0,0 +1 @@
+http://data.openbudgets.eu/ontology
diff --git a/ontology.ttl.graph b/ontology.ttl.graph
new file mode 100644
index 0000000..dbd4569
--- /dev/null
+++ b/ontology.ttl.graph
@@ -0,0 +1 @@
+http://data.openbudgets.eu/ontology