context: It is likely that Julius is a lion. It is highly likely that Brian is a frog. It is likely that John got the milk.
hypothesis: It is probably not the case that either Brian is a frog, or John got the milk.
valid_hypothesis: It is probably not the case that either Brian is a frog, or John got the milk.
invalid_hypothesis: It is probable that either Brian is a frog, or John got the milk.
hypothesis_assertion: Either Brian is a frog, or John got the milk.