['c4']
['pytorch', 'safetensors', 'longformer', 'fill-mask', 'en', 'dataset:c4', 'arxiv:2004.05150', 'arxiv:2210.05529', 'arxiv:1908.08962', 'transformers', 'long_documents', 'license:cc-by-sa-4.0', 'autotrain_compatible']