Update duckdb index files

.gitattributes

@@ -54,3 +54,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
 phi0108--demo-strucuture-en/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+phi0108--demo-strucuture-en/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

phi0108--demo-strucuture-en/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:20891f03a825234529eab3af9bc29868f1992fe0ce01d9a4db21307a7b1db6bc
+size 1060864