Add trial dataset with examples for few-shot learning

README.md

@@ -12,6 +12,8 @@ configs:
   data_files:
   - split: train
     path: "data.jsonl"
+  - split: trial
+    path: "trial.jsonl"
   - split: test_same
     path: test-same-genre.jsonl
   - split: test_cross