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dataset.py

@@ -27,7 +27,15 @@ class CocoBaseEval(datasets.GeneratorBasedBuilder):
         ]
 
     def _generate_examples(self, data_file):
+        import json
         with open(data_file, "r") as f:
             for idx, line in enumerate(f):
                 item = json.loads(line)
-                yield idx, item
+                # Make sure we yield the full item with all fields
+                yield idx, {
+                    "image_id": item["image_id"],
+                    "image": item["image"],
+                    "input_prompt": item["input_prompt"],
+                    "gt_objects": item["gt_objects"],
+                    "gt_captions": item["gt_captions"]
+                }