Update poquad.py

poquad.py

@@ -108,7 +108,8 @@ class SquadV2(datasets.GeneratorBasedBuilder):
                     for qa in paragraph["qas"]:
                         question = qa["question"]
                         
-
+                        if "answers" not in qa:
+                            continue
                         answer_starts = [answer["answer_start"] for answer in qa["answers"]]
                         answers = [answer["text"] for answer in qa["answers"]]
                         # is_impossible = qa["is_impossible"]