Premise: K2 . K2 is known as the Savage Mountain due to the extreme difficulty of ascent . It is more difficult and hazardous to reach the peak of K2 from the Chinese side , so it is usually climbed from the Pakistani side . Unlike Annapurna , the mountain with the highest fatality-to-summit rate ( 191 summits and 61 fatalities ) , or the other eight thousanders , K2 has never been climbed during winter .
Hypothesis: K2 is difficult to climb.
Label: ENTAILMENT