context: It is probable that Greg is a lion. We doubt that Winona is a cat. There is almost no chance that Bernhard is a rhino.
hypothesis: Chances are slight that either Winona is a cat, or Greg is a lion.
valid_hypothesis: There is a better than even chance that either Winona is a cat, or Greg is a lion.
invalid_hypothesis: Chances are slight that either Winona is a cat, or Greg is a lion.
hypothesis_assertion: Either Winona is a cat, or Greg is a lion.