Sentence:  The <WSD>Darkiñung</WSD> speaking people adjoined the Kamilaroi on the south-east and occupied a considerable range of country in the counties of Hunter, Northumberland and Cook, extending from Wilberforce and Wiseman's Ferry on the Hawkesbury river, to Jerry's Plains and Singleton on the Hunter, and including the basins of the Colo and Macdonald rivers, Wollombi Brook and other streams. 
Meaning of the word marked with <WSD> tags:  The extinct language of the people of that region.