task_categories:question-answering task_ids:open-domain-qa annotations_creators:crowdsourced language_creators:found multilinguality:multilingual multilinguality:translation source_datasets:extended|natural_questions source_datasets:original language:ar language:da language:de language:en language:es language:fi language:fr language:he language:hu language:it language:ja language:km language:ko language:ms language:nl language:no language:pl language:pt language:ru language:sv language:th language:tr language:vi language:zh license:cc-by-3.0 size_categories:10K<n<100K arxiv:2007.15207 region:us