task_categories:question-answering task_categories:token-classification task_ids:closed-domain-qa task_ids:extractive-qa annotations_creators:crowdsourced language_creators:crowdsourced multilinguality:monolingual source_datasets:original language:en license:cc-by-4.0 size_categories:10K<n<100K arxiv:2011.08115 region:us output-structure yes-no-qa