context: It is likely that Sandra grabbed the milk. There is almost no chance that Brian is a lion. It is improbable that Greg is a frog. Chances are about even that if Brian is a lion, and Sandra grabbed the milk, then Winona is a wolf. There is almost no chance that if Greg is a frog, or Brian is a lion, then Julius is white. It is almost certain that if either Greg is a frog, or Sandra grabbed the milk, then Bernhard is a swan.
hypothesis: Chances are slight that either Sandra grabbed the milk, or Brian is a lion.
valid_hypothesis: It is likely that either Sandra grabbed the milk, or Brian is a lion.
invalid_hypothesis: Chances are slight that either Sandra grabbed the milk, or Brian is a lion.
hypothesis_assertion: Either Sandra grabbed the milk, or Brian is a lion.