Anchor: A black dog plays around near a waterfall.
Entailed: A waterfall proves a tempting playground for the dog.
Contradiction: A hydroelectric dam ruptures and the pressure of the lake of dogs it was using to power it's turbines pour out in a frenzy of barks and yelps.
Contradiction: Two people are eating alone.
Contradiction: The girl's feet are dirty.
Contradiction: My bill is quite reasonable.
Contradiction: The dog is large