Fix tokenization boundary

README.md

@@ -17,14 +17,12 @@ dataset_info:
     dtype: string
   - name: prefix
     dtype: string
-  - name: conversations_original
-    list: string
   splits:
   - name: train
-    num_bytes: 5883775
+    num_bytes: 2993520
     num_examples: 1030
-  download_size: 3334754
-  dataset_size: 5883775
+  download_size: 1684980
+  dataset_size: 2993520
 configs:
 - config_name: default
   data_files:

data/train-00000-of-00001.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:d2e7c01558716f1611ba21352a5216e831f70c6be1fab157745e253ab62f2f05
-size 3334754
+oid sha256:e95dce5ff3720692af036ffb4818e598b4bfa116280d386a9fe1bda3fa58fbb9
+size 1684980