sentences:  Chengkou County
  
  Chengkou County () is a county in Chongqing municipality, China, and is the northernmost county-level division of Chongqing, bordering the provinces of Shaanxi and Sichuan to the north and west, respectively.To the northeast, the county borders Zhengping County, Pingli County, Langao County and Ziyang County of Ankang, Shaanxi.