Premise: A brown and a black dog are wearing collars and playing with each other.

Hypothesis: The brown and black dog are brother and sister, and are owned by the same family in town.
Relation: neutral

Hypothesis: The brown and black dog are mortal enemies, barking ferociously every time they see each other through the fence.
Relation: contradiction

Hypothesis: There are two animals in this picture.
Relation: entailment