context: A man is standing in the aisle of a grocery store and staring at the cereal selection.
hypothesis: It is certain that a man is wondering what cereal to buy his children.
valid_hypothesis: Chances are about even that a man is wondering what cereal to buy his children.
invalid_hypothesis: It is certain that a man is wondering what cereal to buy his children.
hypothesis_assertion: A man is wondering what cereal to buy his children.