Anchor: A young man with a large black portfolio is skateboarding on the sidewalk.
Entailed:  A man with a large black portfolio is skateboarding on the sidewalk.
Contradiction: A dad and his son throwing ball.
Contradiction: The companies demanded that it be completed in two days.
Contradiction: Our dog got pregnant which surprised me because I thought that she was too old.
Contradiction: The kids are on top of the roof.
Contradiction: There are usually a lot of lounge chairs on the beach.