Update duckdb index files

yemen2016--memo1/train/index.duckdb

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:234019c15c261acea30f5d7d01d7caecdfcbed375c0356ffb567eb4f6866f786
-size 504901632
+oid sha256:59ca2ef8cc762f73da12b5e7a559ed45ca6a654d68ae503550f751badde2d4c0
+size 505688064