task_categories:token-classification task_ids:named-entity-recognition annotations_creators:machine-generated annotations_creators:expert-generated language_creators:found language_creators:expert-generated multilinguality:monolingual source_datasets:original language:en license:other size_categories:1K<n<10K modality:text library:datasets library:mlcroissant region:us epidemiology rare disease named entity recognition NER NIH