Anchor: A man riding a skateboard jumps up on a wood ledge.
Entailed: The man slides across the ledge and lands on the concrete.
Contradiction: The man falls off the skateboard as he jumps on the ledge.
Contradiction: The woman is pointing at a chalk board.
Contradiction: A dog was in the stream.
Contradiction: I apologize for not making myself clear.
Contradiction: a couple are looking at a computer