context: It is certain that Sandra grabbed the milk. Chances are about even that Greg is a lion. We doubt that Julius is a frog.
hypothesis: Chances are about even that either Julius is a frog, or Greg is a lion.
valid_hypothesis: Chances are about even that either Julius is a frog, or Greg is a lion.
invalid_hypothesis: There is almost no chance that either Julius is a frog, or Greg is a lion.
hypothesis_assertion: Either Julius is a frog, or Greg is a lion.