context: It is improbable that Winona is a mouse. We believe that Lily is gray. It is highly unlikely that Jessica is a cat. It is almost certain that if Winona is a mouse, or Lily is gray, then Sandra left the milk. It is probably not the case that if Lily is gray, and Jessica is a cat, then Julius is gray. It is highly likely that if either Lily is gray, or Winona is a mouse, then Brian is green.
hypothesis: There is a better than even chance that either Brian is green, or Julius is gray.
valid_hypothesis: There is a better than even chance that either Brian is green, or Julius is gray.
invalid_hypothesis: Chances are slight that either Brian is green, or Julius is gray.
hypothesis_assertion: Either Brian is green, or Julius is gray.