context: It is probably the case that John went to the hallway. It is improbable that Greg is yellow. It is probably the case that Brian is a rhino. It is probably the case that if either Brian is a rhino, or Greg is yellow, then Bill is in the school. It is unlikely that if John went to the hallway, and Greg is yellow, then Mary dropped the milk. There is almost no chance that if Brian is a rhino, or Greg is yellow, then Lily is a lion.
hypothesis: It is probable that either John went to the hallway, or Mary dropped the milk.
valid_hypothesis: It is probable that either John went to the hallway, or Mary dropped the milk.
invalid_hypothesis: We doubt that either John went to the hallway, or Mary dropped the milk.
hypothesis_assertion: Either John went to the hallway, or Mary dropped the milk.