Anchor: A boy does a skateboarding trick in the air while holding the board with his left hand.
Entailed: A person does a skateboarding trick in the air while holding the board with his left hand.
Contradiction: A man does a skateboarding trick in the air while holding the board with his left hand.
Contradiction: not watched at alll
Contradiction: A man is jogging
Contradiction: Group of kids running in a field
Contradiction: A man is working.