Update README.md

README.md

@@ -3,6 +3,7 @@ license: mit
 language:
 - en
 - zh
+pretty_name: B2NERD
 ---
 
 # B2NER 
@@ -25,6 +26,36 @@ We provide 3 versions of our dataset.
  - `B2NERD_all`: Contain ~1.4M samples from 54 datasets. The full-data version of our dataset suitable for in-domain supervised evaluation. It has standardized entity definitions but does not undergo any data selection or pruning.  
  - `B2NERD_raw`: The raw collected datasets with raw entity labels. It goes through basic format preprocessing but without further standardization.
 
+<details>
+  <summary><b>Example Data Format</b></summary>
+ 
+```json
+[
+    {
+        "sentence": "Barak announced 2 weeks ago that he would call for early elections .",
+        "entities": [
+            {
+                "name": "Barak",
+                "type": "person",
+                "pos": [
+                    0,
+                    5
+                ]
+            },
+            {
+                "name": "2 weeks ago",
+                "type": "date or period",
+                "pos": [
+                    16,
+                    27
+                ]
+            }
+        ]
+    },
+]
+```
+</details>
+
 You can download the data from here (the B2NERD_data.zip in the "Files and versions" tab) or [Google Drive](https://drive.google.com/file/d/1JW3ZZPlJ5vm_upn0msihI9FQjo4TmZDI/view?usp=sharing). Current data is uploaded as .zip for convenience. We are considering upload raw data files for better preview.  
 Please ensure that you have the proper licenses to access the raw datasets in our collection. 
 
@@ -76,4 +107,4 @@ More information can be found in the Appendix of paper.
     url = "https://aclanthology.org/2025.coling-main.725/",
     pages = "10902--10923"
 }
-```
+```