OntoNotes

OntoNotes is a large, detailed linguistic database that combines many types of language data—such as written text, speech, and annotations—covering multiple topics and domains. It includes structured information like how words relate to each other, their meanings, and how sentences are constructed. Researchers and developers use OntoNotes to improve natural language processing (NLP) technologies, enabling computers to better understand, interpret, and generate human language across different contexts and applications. In essence, it provides a comprehensive, annotated 'map' of language to advance computational understanding of human communication.