Set platinum_target of rejected questions to None (multiarith)

README.md

@@ -289,10 +289,10 @@ dataset_info:
     dtype: string
   splits:
   - name: test
-    num_bytes: 157365
+    num_bytes: 157371
     num_examples: 174
-  download_size: 54201
-  dataset_size: 157365
+  download_size: 54214
+  dataset_size: 157371
 - config_name: singleop
   features:
   - name: cleaning_status

multiarith/test-00000-of-00001.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:6cd3ca651e9ea57c980615c3f9161557fbc091eecf9e3cbea75d5b168a9b1554
-size 54201
+oid sha256:9be73c13e67b94a59de39f2f25614dc2eec16227b514e79bfe555a26f3dd2a03
+size 54214