Anchor: A shirtless man jumping off a large concrete structure into a river with his friends watching from the structure.
Entailed: The man jumping is not wearing a shirt.
Contradiction: The man is not brave.
Contradiction: A man decides not to jump in the river while his  friends tease him.
Contradiction: People at an indoor gathering.
Contradiction: A group of friends are hiking in the mountains.
Contradiction: The man is indoors.