diff --git a/data/scripts/run-db.sh b/data/scripts/run-db.sh
index dced127..2a7f19e 100755
--- a/data/scripts/run-db.sh
+++ b/data/scripts/run-db.sh
@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
 repo=$(git rev-parse --show-toplevel)
-mongod --dbpath "$repo/data/db"
\ No newline at end of file
+mongod --dbpath "$repo/data/db" --wiredTigerCacheSizeGB 2
diff --git a/unimore_bda_6/__main__.py b/unimore_bda_6/__main__.py
index 5e20772..1f5842b 100644
--- a/unimore_bda_6/__main__.py
+++ b/unimore_bda_6/__main__.py
@@ -41,9 +41,9 @@ def main():
 
         for SentimentAnalyzer in [
             # ThreeCheat,
-            NLTKSentimentAnalyzer,
             TensorflowPolarSentimentAnalyzer,
             TensorflowCategorySentimentAnalyzer,
+            NLTKSentimentAnalyzer,
         ]:
 
             slog = logging.getLogger(f"{__name__}.{sample_func.__name__}.{SentimentAnalyzer.__name__}")
@@ -116,7 +116,7 @@ def main():
                             cumulative_evaluation_results += evaluation_results
                             break
                     finally:
-                        datasets_cm.__exit__()
+                        datasets_cm.__exit__(None, None, None)
 
                 slog.info("Cumulative evaluation results: %s", cumulative_evaluation_results)