diff --git a/PyCTBN/tests/utility/test_sample_importer.py b/PyCTBN/tests/utility/test_sample_importer.py
index aa9a5a7..8e96778 100644
--- a/PyCTBN/tests/utility/test_sample_importer.py
+++ b/PyCTBN/tests/utility/test_sample_importer.py
@@ -17,9 +17,10 @@ class TestSampleImporter(unittest.TestCase):
     def setUpClass(cls) -> None:
         with open("./PyCTBN/test_data/networks_and_trajectories_binary_data_01_3.json") as f:
             raw_data = json.load(f)
-
+            
+            #read the samples
             trajectory_list_raw= raw_data[0]["samples"]
-
+            
             cls.trajectory_list = [pd.DataFrame(sample) for sample in trajectory_list_raw]
 
             cls.variables= pd.DataFrame(raw_data[0]["variables"])