context: A young boy and an adult man looking at ducks in a pond.
hypothesis: It is probable that the boy and his dad walk along the edge of the pond.
valid_hypothesis: It is probable that the boy and his dad walk along the edge of the pond.
invalid_hypothesis: It is probably not the case that the boy and his dad walk along the edge of the pond.
hypothesis_assertion: The boy and his dad walk along the edge of the pond.