context: A family is taking part in a walk-a-thon.
hypothesis: There is a better than even chance that the family is taking place in the event in memory of another family member.
valid_hypothesis: It is highly unlikely that the family is taking place in the event in memory of another family member.
invalid_hypothesis: There is a better than even chance that the family is taking place in the event in memory of another family member.
hypothesis_assertion: The family is taking place in the event in memory of another family member.