Fix nltk errors

Author: Lumosis

benchmarks/eval_accuracy.py

@@ -131,7 +131,10 @@ def eval_accuracy(request_outputs_dict, match_type):
 
   else:
     metric = evaluate.load("rouge")
-    nltk.download("punkt_tab")
+    nltk.download("punkt_tab")    
+    nltk.download("punkt")
+    nltk.download('wordnet')
+    nltk.download('omw-1.4')
     preds, targets = postprocess_text(preds, targets)
     result = metric.compute(
         predictions=preds,