Anchor: a brown dog chewing on a large piece of wood.
Entailed: A brown dog is chewing on wood.
Contradiction: The black dog is drinking water.
Contradiction: There is rain falling on the ground.
Contradiction: You are really going to open a can of worms if you start getting into that.
Contradiction: A cat is drowning in a pool.
Contradiction: I anticipate that you can lend a hand.