diff --git a/backend/Segmenter.py b/backend/Segmenter.py
index 5ae5e87..5f0662c 100644
--- a/backend/Segmenter.py
+++ b/backend/Segmenter.py
@@ -368,7 +368,9 @@ def cascading_anaphora_propositionalizer(self, path):
 		if path.endswith("json"):
 			is_json_file=self.is_json(path)                     
 			if is_json_file: 
-				data = open(path).read()                              
+				data = open(path).read()    
+				null = None
+				false = False                          
 				extended_json_aif = eval(data)
 				json_aif = json_dict = extended_json_aif['AIF']