context: There is almost no chance that Gertrude is a sheep. It is probably the case that Brian is a frog. It is probably the case that Julius is a lion.
hypothesis: It is impossible that either Julius is a lion, or Brian is a frog.
valid_hypothesis: Chances are about even that either Julius is a lion, or Brian is a frog.
invalid_hypothesis: It is impossible that either Julius is a lion, or Brian is a frog.
hypothesis_assertion: Either Julius is a lion, or Brian is a frog.