Update README.md

README.md

@@ -72,6 +72,13 @@ The data fields are the same among all splits.
 - `id`: a `string` feature.
 - `tokens`: a `list` of `string` features.
 - `ner_tags`: a `list` of classification labels, with possible values including `O` (0), `B-PER` (1), `I-PER` (2), `B-ORG` (3), `I-ORG` (4).
+ "O", #(0)
+                                "B-LOC", #(1)
+                                "I-LOC", #(2)
+                                "B-EPI", #(3)
+                                "I-EPI", #(4)
+                                "B-STAT", #(5)
+                                "I-STAT", #(6)
 
 ### Data Splits