Premise: A black dog plays around near a waterfall.

Hypothesis: A waterfall proves a tempting playground for the dog.
Relation: entailment

Hypothesis: 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.
Relation: contradiction

Hypothesis: The dog's owners built a miniature waterfall for her to play in.
Relation: neutral