Anchor: A person with a helmet on is airborne and upside down on a mechanized device for traveling on water
Entailed:  A person with a helmet.
Contradiction: A person is surfing in the ocean.
Contradiction: They have done extremely well after the all star break.
Contradiction: Only the mandrakes stood calmly in their positions.
Contradiction: The plane is already full.
Contradiction: A child is wearing a shirt.