context: It is impossible that Mary moved to the garden. It is probable that Lily is green. It is probably the case that Fred dropped the apple. It is probably not the case that if Mary moved to the garden, and Lily is green, then Bill went to the bedroom. It is highly likely that if Mary moved to the garden, and Fred dropped the apple, then John picked up the apple. It is probable that if either Lily is green, or Mary moved to the garden, then Emily is a cat.
hypothesis: There is almost no chance that either Lily is green, or Fred dropped the apple.
valid_hypothesis: Chances are about even that either Lily is green, or Fred dropped the apple.
invalid_hypothesis: There is almost no chance that either Lily is green, or Fred dropped the apple.
hypothesis_assertion: Either Lily is green, or Fred dropped the apple.