context: There is a very good chance that Lily is a rhino. It is likely that Bernhard is a frog. It is probably the case that Julius is a swan.
hypothesis: It is impossible that either Bernhard is a frog, or Julius is a swan.
valid_hypothesis: Chances are about even that either Bernhard is a frog, or Julius is a swan.
invalid_hypothesis: It is impossible that either Bernhard is a frog, or Julius is a swan.
hypothesis_assertion: Either Bernhard is a frog, or Julius is a swan.