context: Chances are about even that Brian is green. Chances are slight that Daniel dropped the apple. It is almost certain that Sandra grabbed the milk. It is highly unlikely that if Brian is green, and Sandra grabbed the milk, then Greg is a swan. It is probably not the case that if either Brian is green, or Daniel dropped the apple, then Julius is a lion. It is certain that if Brian is green, or Daniel dropped the apple, then Bernhard is white.
hypothesis: It is highly unlikely that either Sandra grabbed the milk, or Julius is a lion.
valid_hypothesis: There is a very good chance that either Sandra grabbed the milk, or Julius is a lion.
invalid_hypothesis: It is highly unlikely that either Sandra grabbed the milk, or Julius is a lion.
hypothesis_assertion: Either Sandra grabbed the milk, or Julius is a lion.