Premise: Many people are gathered in a small park, both sitting on benches and lounging on the grass.

Hypothesis: A group of people gathered at a comic book convention hall watching a man speak on stage.
Relation: contradiction

Hypothesis: A group of people gathered in a small park for a company picnic outside.
Relation: neutral

Hypothesis: A group of people gathered in a small park some sitting on benches and other lounging on the grass outside.
Relation: entailment