diff --git a/ariadne/contrib/inception_util.py b/ariadne/contrib/inception_util.py
index 1269db2..382a5aa 100644
--- a/ariadne/contrib/inception_util.py
+++ b/ariadne/contrib/inception_util.py
@@ -34,7 +34,7 @@ def create_prediction(
     feature: str,
     begin: int,
     end: int,
-    label: str,
+    label: Optional[str] = None,
     score: Optional[int] = None,
     score_explanation: Optional[str] = None,
     auto_accept: Optional[bool] = None,
@@ -48,7 +48,7 @@ def create_span_prediction(
     feature: str,
     begin: int,
     end: int,
-    label: str,
+    label: Optional[str] = None,
     score: Optional[int] = None,
     score_explanation: Optional[str] = None,
     auto_accept: Optional[bool] = None,
@@ -90,7 +90,7 @@ def create_relation_prediction(
     feature: str,
     source: FeatureStructure,
     target: FeatureStructure,
-    label: str,
+    label: Optional[str] = None,
     score: Optional[int] = None,
     score_explanation: Optional[str] = None,
     auto_accept: Optional[bool] = None,