Anchor: Four ski patrollers on skis are wearing helmets and goggles.
Entailed: Four people wear winter gear.
Contradiction: A man wears goggles on his feet.
Contradiction: Everything has been tested. 
Contradiction: Third party payers often prevent consumers from experiences the actual costs of health care.
Contradiction: There is no way to get into contact with him.
Contradiction: Caesar was killed on March 15.