task_categories:question-answering task_categories:text-retrieval language:en license:mit size_categories:10K<n<100K format:parquet format:optimized-parquet modality:text library:datasets library:pandas library:polars library:mlcroissant arxiv:2205.02266 arxiv:2108.06314 region:us temporal-qa time-sensitive retrieval-augmented-generation timestamp streamingqa timeqa