Anchor: A man and a woman watch two dogs.
Entailed: The man and woman are trying to see what the two dogs are doing.
Contradiction: Two goldfish are riding bikes in a giant pile of mashed potatoes.
Contradiction: There is no way to reach the village by land.
Contradiction: Do you often use credit cards to shop, or do you prefer to use your checking account?
Contradiction: My parents and I understand each other perfectly. 
Contradiction: Do it, before anyone sees.