Create/update filtered LongBench Pro subset (128k, 256k) with id+text

README.md

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+---
+dataset_info:
+  features:
+  - name: id
+    dtype: string
+  - name: text
+    dtype: string
+  splits:
+  - name: test
+    num_bytes: 173462462
+    num_examples: 500
+  download_size: 205335379
+  dataset_size: 173462462
+configs:
+- config_name: default
+  data_files:
+  - split: test
+    path: data/test-*
+---

data/test-00000-of-00001.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3f687e560fd5ab66fddcdcd968d70dea8fd4bfc7b60aa405fa11b062fb27ef77
+size 205335379