context: Three adult bystanders and one child looking up toward the sky while standing on the sidewalk.
hypothesis: It is certain that a child and his three aunts are watching the skydiver in the sky.
valid_hypothesis: There is almost no chance that a child and his three aunts are watching the skydiver in the sky.
invalid_hypothesis: It is certain that a child and his three aunts are watching the skydiver in the sky.
hypothesis_assertion: A child and his three aunts are watching the skydiver in the sky.