Anchor: The boy is sliding down the ramp on a skateboard.
Entailed: The boy is skateboarding.
Contradiction: The boy is skiing down the mountain.
Contradiction: A man is running
Contradiction: They have places to get changed, swim, and then eat!
Contradiction: The peak of the Egyptian art and creativity was in the 4th Dynasty.
Contradiction: The couple is walking side-by-side.