fixed problem in loading script

legal-mc4.py

@@ -75,7 +75,6 @@ class MC4Legal(datasets.GeneratorBasedBuilder):
             description=_DESCRIPTION,
             features=datasets.Features(
                 {
-                    "index": datasets.Value("int32"),
                     "url": datasets.Value("string"),
                     "timestamp": datasets.Value("timestamp[s]"),
                     "matches": datasets.Sequence(datasets.Value("string")),
@@ -121,11 +120,11 @@ class MC4Legal(datasets.GeneratorBasedBuilder):
                                 # remove the Z at the end (time zone)
                                 if isinstance(timestamp, str) and timestamp.endswith("Z"):
                                     timestamp = timestamp[:-1]
+                                print(example)
                                 yield id_, {
-                                    "index": example.get("index", ""),
                                     "url": example.get("url", ""),
                                     "timestamp": timestamp,
-                                    "matches": ast.literal_eval(example.get("matches", "")),
+                                    "matches": example.get("matches", []),
                                     "text": example.get("text", ""),
                                 }
                                 id_ += 1