fix: modalities taxonomy, task_type, url consolidation, structural corrections

metadata.json

@@ -7,7 +7,7 @@
         "en"
       ],
       "modalities": [
-        "image"
+        "single_image_start"
       ],
       "task_type": "vqa",
       "prompt_template": "<image>{{ question }}{% if options %}\nOptions:\n{% for k, v in options.items() %}{{ k }}. {{ v }}{% if not loop.last %}\n{% endif %}{% endfor %}{% endif %}\n",
@@ -33,9 +33,6 @@
           "optional": true,
           "note": "list source values are normalized to {A,B,...} dict"
         },
-        "choices": {
-          "from": "choices"
-        },
         "extra": {
           "subject": {
             "from": "subject"
@@ -49,10 +46,9 @@
         },
         "source": {
           "format": "json",
-          "links": {
+          "url": {
             "test": "https://github.com/DynaMath/DynaMath/tree/main/dataset"
-          },
-          "url": "https://github.com/DynaMath/DynaMath"
+          }
         }
       }
     }