Question: Tongchuan and Ezhou, are located on which country?
Sentence (from "Tongchuan"): Tongchuan () is a prefecture-level city located in central Shaanxi province, People's Republic of China on the southern fringe of the Loess Plateau that defines the northern half of the province (Shanbei) and the northern reaches of the Guanzhong Plain.
Relevant evidence: Yes