context: It is highly likely that Bernhard is a lion. It is improbable that Brian is gray. Chances are slight that Julius is green.
hypothesis: It is unlikely that julius is green, or Brian is gray.
valid_hypothesis: It is unlikely that julius is green, or Brian is gray.
invalid_hypothesis: It is certain that julius is green, or Brian is gray.
hypothesis_assertion: Julius is green, or Brian is gray.