context: It is certain that Greg is a lion. It is probably the case that Brian is a frog. There is a very good chance that Jessica is a mouse.
hypothesis: We believe that either Greg is a lion, or Brian is a frog.
valid_hypothesis: It is probably not the case that either Greg is a lion, or Brian is a frog.
invalid_hypothesis: We believe that either Greg is a lion, or Brian is a frog.
hypothesis_assertion: Either Greg is a lion, or Brian is a frog.