Update README.md

README.md

@@ -75,7 +75,7 @@ An example of 'train' looks as follows:
 
 ### Data Fields
 
-- `_unit_id`: the unique identifier for this data entry, an `int32` feature.
+- `_unit_id`: the unique identifier for this data entry, an `int64` feature.
 - `Worker Answer`: the answer or classification provided by the worker based on the context, a `string` feature.
 - `context`: the text providing the scenario or situation where the drug and disease interaction is mentioned, a `string` feature.
 - `drug_name`: the name of the drug discussed in the context, a `string` feature.