Update parquet files

nbtpj--6k-sample/parquet-train.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:39e04ae07529d2984ae00bbbdf6775af98fb1b1995f58aaa7484082fa5dc24fb
-size 8033872
+oid sha256:ec0b5a614ddc57430e1eb359030de421ea2cac9c1ef7e3677c71dd0f5cb26761
+size 5318113