With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Kim Il-sung died from a sudden heart attack on July 8, 1994.The politics in the last years of Kim Il-sung hardly resemble those of the beginning of the Kim Jong-il era. Although the succession of Kim Jong-il coincided with much societal upheaval, and the succession is conventionally seen as a turning point of North Korean history, the change in leadership had direct consequences.
text_B: Did Kim Jong-Il's style of governing change an ordinary North Korean's lifestyle?
YES.