Anchor: One biker wearing a black helmet riding on a dirt hill.
Entailed: A biker rides on the dirt hill while wearing a black helmet.
Contradiction: A biker wearing an orange helmet rides in the grass.
Contradiction: A basketball player jumps into base.
Contradiction: Take a sit, young one, he said kindly.
Contradiction: Two dogs are sleeping on a bed.
Contradiction: The boat is on the water.