context: There is almost no chance that Greg is a lion. We doubt that Lily is a rhino. There is almost no chance that Brian is green. It is certain that if Greg is a lion, and Lily is a rhino, then Antoine is bored. Chances are slight that if Greg is a lion, and Brian is green, then Julius is yellow. It is probably not the case that if Lily is a rhino, and Brian is green, then Gertrude is a mouse.
hypothesis: It is highly unlikely that either Greg is a lion, or Brian is green.
valid_hypothesis: It is highly unlikely that either Greg is a lion, or Brian is green.
invalid_hypothesis: It is almost certain that either Greg is a lion, or Brian is green.
hypothesis_assertion: Either Greg is a lion, or Brian is green.