Anchor: A group of people are walking in single file at an exhibit.
Entailed: People walk single file at an exhibit.
Contradiction: People sit in the middle of an exhibit.
Contradiction: A naked man is diving into the lake.
Contradiction: The coverage function can be used to estimate marginal access cost. 
Contradiction: A man wearing a white long-sleeve shirt and khaki pants pushes a machine that is painting a yellow stripe on a parking lot.
Contradiction: The person is sitting on the ground.