context: A man tries to get himself into shape on a treadmill.
hypothesis: There is almost no chance that a man running on a treadmill to run a marathon
valid_hypothesis: There is almost no chance that a man running on a treadmill to run a marathon
invalid_hypothesis: It is probably the case that a man running on a treadmill to run a marathon
hypothesis_assertion: A man running on a treadmill to run a marathon