context: A young boy in a Cookie Monster t-shirt sits on the ground on a fall day, holding a fallen leaf in his hand as an expression of joy lights up on his face.
hypothesis: It is certain that a young boy is sitting outdoors.
valid_hypothesis: It is certain that a young boy is sitting outdoors.
invalid_hypothesis: It is highly unlikely that a young boy is sitting outdoors.
hypothesis_assertion: A young boy is sitting outdoors.