Anchor: One man helps another man start a back flip
Entailed: The man is helping the other man start a gymnastic trick.
Contradiction: Two men are sitting at a sewing machine.
Contradiction: He had learned in first grade enough to see the relationship as it was. 
Contradiction: a man smiles while holding a rope
Contradiction: People walk through a crowded store.
Contradiction: If you heard towards the palm tree, you will pass the Sanctuary of Apollo.