["task_categories:question-answering", "task_ids:open-domain-qa", "annotations_creators:expert-generated", "language_creators:machine-generated", "multilinguality:monolingual", "source_datasets:original", "language:en", "license:apache-2.0", "size_categories:1M<n<10M", "arxiv:2104.08727", "region:us"]
[{"name": "id", "dtype": "int32"}, {"name": "question", "dtype": "string"}, {"name": "short_answer", "dtype": "string"}, {"name": "answer", "dtype": "string"}, {"name": "answer_type", "dtype": {"class_label": {"names": {"0": "feat_snip", "1": "collection", "2": "knowledge", "3": "unit_conv", "4": "time_conv", "5": "curr_conv"}}}}]