Anchor: They are made accessible by thousands of narrow donkey tracks, which are used by hikers and ramblers.
Entailed: They are rendered accessible by many narrow donkey tracks used by hikers.
Contradiction: It is not accessible from donkey tracks.
Contradiction: A boy is sitting in a boat with his family  on the ocean.
Contradiction: A pair of cavorting dogs play with a ball.
Contradiction: The man wearing a blue suit is sitting on the curb drinking a soda.
Contradiction: A person playing a game with friends.