language:en license:cc-by-4.0 size_categories:10K<n<100K format:parquet modality:text library:datasets library:pandas library:mlcroissant library:polars arxiv:2504.07854 arxiv:2504.04131 region:us kl3m kl3m-derived legal sbd sentence-boundary-detection paragraph-boundary-detection legal-nlp benchmark evaluation