fix json file reading

NLVR2.py

@@ -100,7 +100,7 @@ class NLVR2Dataset(datasets.GeneratorBasedBuilder):
         ]
 
     def _generate_examples(self, files_path):
-        json_file = json.load(open(files_path, "r"))
+        json_file = [json.loads(line) for line in open(files_path).readlines()]
 
         for i, ex in enumerate(json_file):
             record = {