Anchor: a young skateboarder doing tricks in the air
Entailed: A young skateboarder showing his talented antics.
Contradiction: A skateboarder doing tricks in the ocean.
Contradiction: Someone is driving a car.
Contradiction: There are many people, at least one of whom does not have a bare head.
Contradiction: There are things that exist for no reason at all.
Contradiction: So, you resided in Texas for some time?