Change the type of the split from TRAIN to ALL.

sentinews.py

@@ -76,7 +76,7 @@ class Sentinews(datasets.GeneratorBasedBuilder):
     def _split_generators(self, dl_manager):
         urls = _URLS[self.config.name]
         data_file = dl_manager.download_and_extract(urls)
-        return [datasets.SplitGenerator(name=datasets.Split.TRAIN, gen_kwargs={"data_file": data_file})]
+        return [datasets.SplitGenerator(name=datasets.Split.ALL, gen_kwargs={"data_file": data_file})]
 
     def _generate_examples(self, data_file):
         _keys_to_return = ["nid", "content", "sentiment"]