Passage: United Nations forces met with North Korean and Chinese officials at Panmunjeom from 1951 to 1953 for truce talks. The talks dragged on for many months. The main point of contention during the talks was the question surrounding the prisoners of war. Moreover, South Korea was uncompromising in its demand for a unified state. On June 8, 1953, an agreement to the POW problem was reached.

Question: What were these talks mainly about?
question surrounding the prisoners of war