Anchor: A skateboarder is riding on a red ramp by the ocean.
Entailed: The skateboarder is by the water.
Contradiction: The skateboarder is sitting on a bench by the ocean.
Contradiction: I was making myself a tuna fish sandwich.
Contradiction: Each study had six laboratories participating. 
Contradiction: The turkeys are talking on their cell phones.
Contradiction: Physical appearance is what is seen first.