Anchor: A boy jumps on his skateboard while a crowd watches
Entailed: A skater is performing a trick.
Contradiction: A boy is sitting on his skateboard on the ground.
Contradiction: The kids are climbing the trees.
Contradiction: Some girls are strapped in harnesses
Contradiction: Tuppence stole the treaty from him before running away.
Contradiction: Starting the climb before dawn will help avoid the extreme heat.