context: Chances are slight that Julie is in the office. It is almost certain that Jessica is a wolf. It is highly unlikely that Julius is a frog. It is unlikely that if Jessica is a wolf, and Julius is a frog, then Bernhard is green. It is probable that if Julie is in the office, and Julius is a frog, then Mary dropped the milk. It is likely that if Jessica is a wolf, or Julius is a frog, then Sandra grabbed the apple.
hypothesis: It is probable that either Mary dropped the milk, or Sandra grabbed the apple.
valid_hypothesis: It is probable that either Mary dropped the milk, or Sandra grabbed the apple.
invalid_hypothesis: There is almost no chance that either Mary dropped the milk, or Sandra grabbed the apple.
hypothesis_assertion: Either Mary dropped the milk, or Sandra grabbed the apple.