Anchor: Hiking in the mountains down steep terrain.
Entailed: There are people on a steep slope.
Contradiction: Some hikers walk on level ground around a lake.
Contradiction: Two men are talking in the car.
Contradiction: You've got many cool places, like Arkansas, along the way. 
Contradiction: I don't know how they are.
Contradiction: Long ago an entity decided English should be an international language.