context: We believe that Brian is a lion. Chances are about even that Bernhard is a frog. There is little chance that Bill left the milk.
hypothesis: There is almost no chance that either Bernhard is a frog, or Bill left the milk.
valid_hypothesis: Chances are about even that either Bernhard is a frog, or Bill left the milk.
invalid_hypothesis: There is almost no chance that either Bernhard is a frog, or Bill left the milk.
hypothesis_assertion: Either Bernhard is a frog, or Bill left the milk.