Anchor: A boy dunks a basketball on a low hoop by the road.
Entailed: A boy dunks a basketball
Contradiction: A boy doesn't dunk a basketball
Contradiction: Nobody is raising an arm
Contradiction: Two people were using some type of knife or blade against each other. 
Contradiction: There is a woman eating a sno-cone on a bench at the beach.
Contradiction: There is a crowd of people.