Anchor: Young hikers in climbing gear prepare to descend down a steep mountainside.
Entailed: Hikers are prepared to descend a moutain.
Contradiction: Hikers are climbing to a mountain peak.
Contradiction: As far as I know we have a lawn mower that does something different.
Contradiction: Girls are at a beach
Contradiction: The flame was quickly put out with water. 
Contradiction: A boy is kneeling in front of an overturned bike.