Update README.

README.md

@@ -28,6 +28,6 @@ Train split contains 21949 documents while test split contains 5536 documents. I
 
 ## Differences from the original split(s)
 
-Originally, dataset is split into three splits: train, validation and test. For the purposes of this repository, original splits were joined back together and divided into train and test splits while making sure that splits were stratified across document sources (news and wiki) and event types.
+Originally, the dataset is split into three splits: train, validation and test. For the purposes of this repository, original splits were joined back together and divided into train and test splits while making sure that splits were stratified across document sources (news and wiki) and event types.
 
-Finally, `date`, `title` and `metadata` columns were separated.
+Originally, the `title` column additionally contained `date` and `metadata` columns. They are now separated into three columns: `date`, `metadata` and `title`.