Premise: Two dogs are on a trail in the woods while two people are looking at them from behind.

Hypothesis: Two cats are on a trail in the woods while two people are looking at them from behind.
Relation: contradiction

Hypothesis: Two big dogs are on a trail in the woods while two people are looking at them from behind.
Relation: neutral

Hypothesis: Dogs are on a trail in the woods while two people are looking at them from behind.
Relation: entailment