context: There is a better than even chance that Sandra grabbed the milk. It is probable that Lily is a swan. It is probably the case that John moved to the garden.
hypothesis: Chances are about even that sandra grabbed the milk, and John moved to the garden.
valid_hypothesis: Chances are about even that sandra grabbed the milk, and John moved to the garden.
invalid_hypothesis: It is impossible that sandra grabbed the milk, and John moved to the garden.
hypothesis_assertion: Sandra grabbed the milk, and John moved to the garden.