add proper typing to swesat.candidate_answers

superlim-2.py

@@ -286,7 +286,10 @@ class SuperLim(datasets.GeneratorBasedBuilder):
                 {
                     "id": datasets.Value("string"),
                     "item": datasets.Value("string"),
-                    "candidate_answers": datasets.Value("string"),
+                    "candidate_answers": datasets.Sequence(
+                        datasets.Value("string"),
+                        length=5)
+                    ,
                     "label": datasets.Value("string"),
                     "meta": datasets.Value("string")
                 }