Anchor: If you are thinking of walking or hiking here, be warned that mists descend suddenly; you may want to go with a guide .
Entailed: The mists here will suddenly descend, making it worthwhile to consider going with a guide.
Contradiction: The mists here don't have any sudden descents so a guide is never necessary.
Contradiction: I think the justice system should take as long as it needs.
Contradiction: Four people in hats are staring at paper.
Contradiction: the child jumps off the hill
Contradiction: A man is riding a bike.