context: Chances are about even that Greg is a lion. There is almost no chance that John dropped the milk. It is probable that Lily is yellow.
hypothesis: It is highly unlikely that either Lily is yellow, or John dropped the milk.
valid_hypothesis: It is probable that either Lily is yellow, or John dropped the milk.
invalid_hypothesis: It is highly unlikely that either Lily is yellow, or John dropped the milk.
hypothesis_assertion: Either Lily is yellow, or John dropped the milk.