Anchor: A boy with snowshoes on is sitting in the snow and smiling.
Entailed: a boy sitting in snow beaming
Contradiction: a boy playing video games indoors
Contradiction: The woman has no appetite and refuses to eat.
Contradiction: I had a neighbor who knew a lot about birds.
Contradiction: Bullfights are forbidden during summer.
Contradiction: Official certification is required for purchase of museum-worthy items.