task_categories:question-answering task_categories:summarization task_categories:text-generation task_ids:multiple-choice-qa task_ids:natural-language-inference language:en arxiv:2201.03533 arxiv:2104.02112 arxiv:2104.07091 arxiv:2104.05938 arxiv:1712.07040 arxiv:2105.03011 arxiv:2112.08608 arxiv:2110.01799 region:us query-based-summarization long-texts