Anchor: a boy rides his ripstik on the street.
Entailed: a person rides his ripstik on the street.
Contradiction: a girl rides her ripstik on the street.
Contradiction: There is a boy thinking about going into the water
Contradiction: A person plays guitar
Contradiction: The horseshoe-shaped cliff, untouched by mankind, stands thousands of feet above the metropolitan area.
Contradiction: man wears cap