context: There is little chance that Daniel took the football. There is little chance that Jeff discarded the milk. It is probably the case that John moved to the garden. Chances are about even that if either John moved to the garden, or Jeff discarded the milk, then Yann is tired. Chances are slight that if Daniel took the football, and Jeff discarded the milk, then Bernhard is a swan. It is impossible that if John moved to the garden, or Daniel took the football, then Mary grabbed the milk.
hypothesis: It is probable that either Yann is tired, or Mary grabbed the milk.
valid_hypothesis: It is probably not the case that either Yann is tired, or Mary grabbed the milk.
invalid_hypothesis: It is probable that either Yann is tired, or Mary grabbed the milk.
hypothesis_assertion: Either Yann is tired, or Mary grabbed the milk.