Anchor: People walk on a small bridge over a lake.
Entailed: The people are walking across the bridge.
Contradiction: The people are picnicking under the bridge.
Contradiction: Best get out of here because there isn't any gold around in this country. 
Contradiction: Two billion in the interim analysis to $1.
Contradiction: It is unhealthy, I would never try those because I care about myself.
Contradiction: Someone is cutting meat.