context: A man and his son riding bikes down the sidewalk.
hypothesis: It is improbable that a man and a boy were riding bikes through town on the sidewalk
valid_hypothesis: It is highly likely that a man and a boy were riding bikes through town on the sidewalk
invalid_hypothesis: It is improbable that a man and a boy were riding bikes through town on the sidewalk
hypothesis_assertion: a man and a boy were riding bikes through town on the sidewalk