data loading script

miracl.py

@@ -167,9 +167,9 @@ class MIRACL(datasets.GeneratorBasedBuilder):
             data['positive_passages'] = [{
                 'docid': docid, 
                 **dict(zip(['title', 'text'], docid2doc[docid]))
-            } for docid in pos_docids]
+            } for docid in pos_docids if docid in docid2doc]
             data['negative_passages'] = [{
                 'docid': docid, 
                 **dict(zip(['title', 'text'], docid2doc[docid]))
-            } for docid in neg_docids]
+            } for docid in neg_docidsi if docid in docid2doc]
             yield qid, data