Anchor: A dog is playing by itself on a beach that has recently seen snowfall.
Entailed: An animal is on a beach.
Contradiction: A pack of wolves is prowling the shoreline.
Contradiction: All power generation plants in the world now use solar and hydro power only.
Contradiction: The cuban missile crisis is related to the military.
Contradiction: Native Africans die in the Ethiopian famine.
Contradiction: He is carrying fruit.