Update README.md

README.md

@@ -102,23 +102,13 @@ The language in the dataset is English.
 
 ### Data Instances
 
-An example of 'train' looks as follow:
+An example of 'train' looks as follows:
 ```json
 {
-  'text': 'In spite of multiple treatment regimens consisting of surgical resection , radiation therapy , and multi-agent chemotherapy , the prognosis is very poor .',
-  'h': {
-    'id': 'C0015252',
-    'start': 54,
-    'end': 72,
-    'name': 'surgical resection'
-  },
-  't': {
-    'id': 'C0033325',
-    'start': 130,
-    'end': 139,
-    'name': 'prognosis'
-  },
-  'relation': 0
+    "text": "Urethral stones are rarely formed primarily in the urethra and are usually associated with urethral strictures or diverticula .", 
+    "h": {"id": "C0041967", "pos": [51, 58], "name": "urethra"}, 
+    "t": {"id": "C0041974", "pos": [91, 110], "name": "urethral strictures"}, 
+    "relation": "finding_site_of"
 }
 ```
 
@@ -127,13 +117,11 @@ An example of 'train' looks as follow:
 - `text`: the text of this example, a `string` feature.
 - `h`: head entity
     - `id`: identifier of the head entity, a `string` feature.
-    - `start`: character off start of the head entity, a `int32` feature.
-    - `end`: character off end of the head entity, a `int32` feature.
+    - `pos`: character offsets of the head entity, a list of `int32` features.
     - `name`: head entity text, a `string` feature.
 - `t`: tail entity
     - `id`: identifier of the tail entity, a `string` feature.
-    - `start`: character off start of the tail entity, a `int32` feature.
-    - `end`: character off end of the tail entity, a `int32` feature.
+    - `pos`: character offsets of the tail entity, a list of `int32` features.
     - `name`: tail entity text, a `string` feature.
 - `relation`: a class label.