Anchor: Eyeballs are worth money only because they are attached to wallets.
Entailed: Wallets are what make eyeballs important.
Contradiction: Eyeballs have no association with wallets.
Contradiction: A woman puts a hat on a girl.
Contradiction: Because we are equal to each other, we are prone to be selfish. 
Contradiction: The officer is responding to a call about a robbery.
Contradiction: The dog is running on the grass.