Textual format Annotated text format BioNLP Shared Task format A family of similar formats of text annotation, used by BRAT and other tools, known as BioNLP Shared Task format (BioNLP 2009 Shared Task on Event Extraction, BioNLP Shared Task 2011, BioNLP Shared Task 2013), BRAT format, BRAT standoff format, and similar. BRAT standoff format BRAT format 1.16