Update README.md

README.md

@@ -23,3 +23,28 @@ configs:
   - split: train
     path: data/train-*
 ---
+
+#### Dataset Card for dwb2023/crisis_prediction_nodes
+
+**Purpose**  
+Stores the nodes (vertices) of the crisis prediction graph, representing entities like airports, organizations, and policies.
+
+**Schema Description**
+| Field Name | Data Type | Description |
+|------------|-----------|-------------|
+| node_id | string | Unique identifier for the node |
+| node_type | string | Type of entity (e.g., "Airport", "Organization") |
+| name | string | Human-readable name of the entity |
+| attributes_json | string | JSON string containing node properties |
+| created_at | timestamp[ms] | When the node was created |
+
+**Example Entry**
+```python
+{
+    "node_id": "HKG_AIRPORT",
+    "node_type": "Airport",
+    "name": "Hong Kong International Airport",
+    "attributes_json": {"iata": "HKG", "capacity": "1000t", "region": "Asia"},
+    "created_at": 1706745600000
+}
+```