Added validation split.

ERRnews.py

@@ -101,9 +101,9 @@ class ERRNews(datasets.GeneratorBasedBuilder):
 
     def _split_generators(self, dl_manager):
         """Returns SplitGenerators."""
-        train = "train.csv"
-        test = "test.csv"
-        val = "val.csv"
+        train = "data/train.csv"
+        test = "data/test.csv"
+        val = "data/val.csv"
 
         data_archive = dl_manager.download_and_extract(self.config.data_url)