Complex sentence: It maintains a sister school relationship with South Korea's Dongseo University; as a result of this relationship and the large population of local Sakhalin Koreans, students from Korea form the majority of international students at Sakhalin State University.
Split into simpler sentences: It maintains a sister school relationship with South Korea's Dongseo University. As a result of this relationship and the large population of local Sakhalin Koreans, students from Korea form the majority of international students at Sakhalin State University.