Update duckdb index files

.gitattributes

@@ -61,3 +61,4 @@ combined/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 all_classes/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 high_school/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 class-8-results/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+class-10-results/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

class-10-results/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f61efd459dd07cfaa36e6e2ce916da4d4c61a79650b96c4470c1f48b34bedb46
+size 1060864