Update duckdb index files

Pavithree--askHistorians_55/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:9500fc0ae15cb332406f925d6ba8ff5c3535ad4cb99c2709a5052a94e06f09f3
-size 139735040
+oid sha256:4b60a7e9bd57a030e0392d060c981b0ce19ec1a887691f9baad1d6c55f07cc45
+size 198979584