Update miracl-reranking.py

miracl-reranking.py

@@ -85,19 +85,11 @@ class MIRACLReranking(datasets.GeneratorBasedBuilder):
     ]
 
     def _info(self):
-        features = datasets.Features({
-            'query_id': datasets.Value('string'),
-            'query': datasets.Value('string'),
-
-            'positive_passages': [{
-                'docid': datasets.Value('string'),
-                'text': datasets.Value('string'), 'title': datasets.Value('string')
-            }],
-            'negative_passages': [{
-                'docid': datasets.Value('string'),
-                'text': datasets.Value('string'), 'title': datasets.Value('string'),
-            }],
-        })
+        features = datasets.Features(
+            query=datasets.Value("string"),
+            positive=datasets.Sequence(datasets.Value("string")),
+            negative=datasets.Sequence(datasets.Value("string")),
+        )
 
         return datasets.DatasetInfo(
             # This is the description that will appear on the datasets page.