Question: To which country belong the county-level city Yanji, east of Jilin Province and a city in west-central Liaoning province known as Beizhen?
Sentence (from "Yanji"): Yanji ("Yeon-gil" or "Yenji" in Korean, formerly romanized as Yenki) is a county-level city in the east of China's Jilin Province, and is the seat of the Yanbian Korean Autonomous Prefecture.
Relevant evidence: Yes