context: It is impossible that Brian is white. It is highly likely that Greg is a lion. It is certain that John went to the hallway. There is little chance that if John went to the hallway, and Greg is a lion, then Sandra left the milk. It is highly unlikely that if Brian is white, or John went to the hallway, then Bernhard is a swan. It is highly unlikely that if Brian is white, or John went to the hallway, then Julius is a rhino.
hypothesis: It is highly likely that sandra left the milk, or Greg is a lion.
valid_hypothesis: It is highly likely that sandra left the milk, or Greg is a lion.
invalid_hypothesis: It is impossible that sandra left the milk, or Greg is a lion.
hypothesis_assertion: Sandra left the milk, or Greg is a lion.