context: Chances are slight that Lily is a rhino. Chances are slight that Brian is green. It is almost certain that Julius is gray. It is highly likely that if Lily is a rhino, and Brian is green, then Sandra grabbed the milk. Chances are slight that if either Brian is green, or Julius is gray, then Greg is a lion. There is almost no chance that if either Julius is gray, or Brian is green, then Mary went to the kitchen.
hypothesis: It is improbable that lily is a rhino, or Sandra grabbed the milk.
valid_hypothesis: It is improbable that lily is a rhino, or Sandra grabbed the milk.
invalid_hypothesis: It is certain that lily is a rhino, or Sandra grabbed the milk.
hypothesis_assertion: Lily is a rhino, or Sandra grabbed the milk.