premise: A boy holding a ball falls down in front of another boy who has his arms reaching out while an older man in a green shirt smiles and watches. hypothesis: An older man in green smiles as he watches the boy with the ball fall down near the boy with outstretched arms.
entailment: The boy falling down in front of another boy who has his arms reaching is restated, as is the older man in a green shirt who smiles. The description is more concise.