diff --git a/engines/config-query-sparql/config/merge-bindings-context/actors.json b/engines/config-query-sparql/config/merge-bindings-context/actors.json
index b19889feb39..3e6de260230 100644
--- a/engines/config-query-sparql/config/merge-bindings-context/actors.json
+++ b/engines/config-query-sparql/config/merge-bindings-context/actors.json
@@ -3,5 +3,6 @@
     "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/config-query-sparql/^3.0.0/components/context.jsonld"
   ],
   "import": [
+    "ccqs:config/merge-bindings-context/source-binding-union.json"
   ]
 }
diff --git a/engines/config-query-sparql/config/query-process/actors.json b/engines/config-query-sparql/config/query-process/actors.json
index 09fc73d0d3a..edb5a7a0e8a 100644
--- a/engines/config-query-sparql/config/query-process/actors.json
+++ b/engines/config-query-sparql/config/query-process/actors.json
@@ -7,6 +7,7 @@
     "ccqs:config/query-process/actors/sequential.json",
     "ccqs:config/query-process/actors/explain-parsed.json",
     "ccqs:config/query-process/actors/explain-logical.json",
-    "ccqs:config/query-process/actors/explain-physical.json"
+    "ccqs:config/query-process/actors/explain-physical.json",
+    "ccqs:config/query-process/actors/annotate-source-binding.json"
   ]
 }
diff --git a/engines/config-query-sparql/config/query-source-identify-hypermedia/actors.json b/engines/config-query-sparql/config/query-source-identify-hypermedia/actors.json
index ce80480fd4e..7296581538c 100644
--- a/engines/config-query-sparql/config/query-source-identify-hypermedia/actors.json
+++ b/engines/config-query-sparql/config/query-source-identify-hypermedia/actors.json
@@ -1,10 +1,10 @@
 {
   "@context": [
     "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/runner/^3.0.0/components/context.jsonld",
-
     "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-query-source-identify-hypermedia-none/^3.0.0/components/context.jsonld",
     "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-query-source-identify-hypermedia-qpf/^3.0.0/components/context.jsonld",
-    "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-query-source-identify-hypermedia-sparql/^3.0.0/components/context.jsonld"
+    "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-query-source-identify-hypermedia-sparql/^3.0.0/components/context.jsonld",
+    "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-query-source-identify-hypermedia-annotate-source/^3.0.0/components/context.jsonld"
   ],
   "@id": "urn:comunica:default:Runner",
   "@type": "Runner",
@@ -27,6 +27,17 @@
       "@id": "urn:comunica:default:query-source-identify-hypermedia/actors#none",
       "@type": "ActorQuerySourceIdentifyHypermediaNone",
       "mediatorMergeBindingsContext": { "@id": "urn:comunica:default:merge-bindings-context/mediators#main" }
+    },
+    {
+      "@id": "urn:comunica:default:query-source-identify-hypermedia/actors#annotate-source",
+      "@type": "ActorQuerySourceIdentifyHypermediaAnnotateSource",
+      "mediatorMergeBindingsContext": { "@id": "urn:comunica:default:merge-bindings-context/mediators#main" },
+      "mediatorQuerySourceIdentifyHypermedia": { "@id": "urn:comunica:default:query-source-identify-hypermedia/mediators#main" },
+      "beforeActors": [
+        { "@id": "urn:comunica:default:query-source-identify-hypermedia/actors#none" },
+        { "@id": "urn:comunica:default:rdf-resolve-quad-pattern/actors#sparql" },
+        { "@id": "urn:comunica:default:query-source-identify-hypermedia/actors#qpf" }
+      ]
     }
   ]
 }
diff --git a/packages/actor-merge-bindings-context-union/lib/ActorMergeBindingsContextUnion.ts b/packages/actor-merge-bindings-context-union/lib/ActorMergeBindingsContextUnion.ts
index 94d3a084bb4..e0b99e5fe87 100644
--- a/packages/actor-merge-bindings-context-union/lib/ActorMergeBindingsContextUnion.ts
+++ b/packages/actor-merge-bindings-context-union/lib/ActorMergeBindingsContextUnion.ts
@@ -23,6 +23,7 @@ export class ActorMergeBindingsContextUnion extends ActorMergeBindingsContext {
   }
 
   public async run(_action: IActionMergeBindingsContext): Promise<IActorMergeBindingsContextOutput> {
+    console.log('ActorMergeBindingsContextUnion');
     // Merge function: Union with set semantics
     const mergeHandlers: Record<string, IBindingsContextMergeHandler<any>> = {};
     mergeHandlers[this.contextKey] = new SetUnionBindingsContextMergeHandler();
diff --git a/packages/actor-query-process-annotate-source-binding/lib/ActorQueryProcessAnnotateSourceBinding.ts b/packages/actor-query-process-annotate-source-binding/lib/ActorQueryProcessAnnotateSourceBinding.ts
index 846971f2473..d5d8e501930 100644
--- a/packages/actor-query-process-annotate-source-binding/lib/ActorQueryProcessAnnotateSourceBinding.ts
+++ b/packages/actor-query-process-annotate-source-binding/lib/ActorQueryProcessAnnotateSourceBinding.ts
@@ -33,6 +33,7 @@ export class ActorQueryProcessAnnotateSourceBinding extends ActorQueryProcess {
   }
 
   public async run(action: IActionQueryProcess): Promise<IActorQueryProcessOutput> {
+    console.log('ActorQueryProcessAnnotateSourceBinding');
     const context = action.context.set(KEY_CONTEXT_WRAPPED, true);
     action.context = context;
 
diff --git a/packages/actor-query-source-identify-hypermedia-annotate-source/lib/ActorQuerySourceIdentifyHypermediaAnnotateSource.ts b/packages/actor-query-source-identify-hypermedia-annotate-source/lib/ActorQuerySourceIdentifyHypermediaAnnotateSource.ts
index 9d07b711a07..87f17e16104 100644
--- a/packages/actor-query-source-identify-hypermedia-annotate-source/lib/ActorQuerySourceIdentifyHypermediaAnnotateSource.ts
+++ b/packages/actor-query-source-identify-hypermedia-annotate-source/lib/ActorQuerySourceIdentifyHypermediaAnnotateSource.ts
@@ -24,6 +24,7 @@ export class ActorQuerySourceIdentifyHypermediaAnnotateSource extends ActorQuery
   public async testMetadata(
     action: IActionQuerySourceIdentifyHypermedia,
   ): Promise<IActorQuerySourceIdentifyHypermediaTest> {
+    console.log('ActorQuerySourceIdentifyHypermediaAnnotateSource - TEST');
     if (action.context.get(KEY_CONTEXT_WRAPPED)) {
       throw new Error('Unable to wrap query source multiple times');
     }
@@ -31,6 +32,7 @@ export class ActorQuerySourceIdentifyHypermediaAnnotateSource extends ActorQuery
   }
 
   public async run(action: IActionQuerySourceIdentifyHypermedia): Promise<IActorQuerySourceIdentifyHypermediaOutput> {
+    console.log('ActorQuerySourceIdentifyHypermediaAnnotateSource');
     const context = action.context.set(KEY_CONTEXT_WRAPPED, true);
     action.context = context;