Update duckdb index files

.gitattributes

@@ -161,3 +161,4 @@ name_genders/yob2016/index.duckdb filter=lfs diff=lfs merge=lfs -text
 new_data/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 name_genders/yob2018/index.duckdb filter=lfs diff=lfs merge=lfs -text
 opensubtitles_inferred/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+opensubtitles_inferred/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

opensubtitles_inferred/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a7aa980f37da37dcdff670817e6b7a5c4f967dfaf0c90ffc7a3305d87feaf159
+size 26226688