context: It is highly likely that Julius is a lion. It is probable that Greg is yellow. It is probable that Sandra grabbed the apple. It is improbable that if Sandra grabbed the apple, or Julius is a lion, then Mary got the football. It is highly unlikely that if Julius is a lion, and Sandra grabbed the apple, then Brian is gray. It is probably not the case that if Julius is a lion, or Greg is yellow, then Bernhard is white.
hypothesis: Chances are about even that either Greg is yellow, or Sandra grabbed the apple.
valid_hypothesis: Chances are about even that either Greg is yellow, or Sandra grabbed the apple.
invalid_hypothesis: It is certain that either Greg is yellow, or Sandra grabbed the apple.
hypothesis_assertion: Either Greg is yellow, or Sandra grabbed the apple.