["task_categories:question-answering", "task_ids:dialogue-generation", "task_ids:open-domain-qa", "annotations_creators:crowdsourced", "language_creators:crowdsourced", "multilinguality:monolingual", "source_datasets:original", "language:en", "license:cc-by-nc-4.0", "size_categories:10K<n<100K", "arxiv:1811.00207", "region:us"]