task_categories:token-classification task_ids:named-entity-recognition task_ids:part-of-speech annotations_creators:expert-generated language_creators:crowdsourced multilinguality:monolingual source_datasets:original language:no license:other size_categories:100K<n<1M format:parquet format:optimized-parquet modality:text library:datasets library:pandas library:polars library:mlcroissant arxiv:1911.12146 region:us structure-prediction