Update cefr.py

cefr.py

@@ -101,7 +101,8 @@ class CefrDataset(datasets.GeneratorBasedBuilder):
             )
             next(csv_reader, None)
             for id_, row in enumerate(csv_reader):
+                (prompt, label) = row
                 yield id_, {
-                    "prompt": row["prompt"],
-                    "label": row["label"]
+                    "prompt": prompt,
+                    "label": label
                 }