context: It is almost certain that Greg is a swan. There is a better than even chance that Julius is a lion. We believe that Bill went to the hallway. There is little chance that if Julius is a lion, or Bill went to the hallway, then Lily is a frog. It is highly unlikely that if Julius is a lion, and Bill went to the hallway, then Mary put down the milk. Chances are about even that if either Julius is a lion, or Bill went to the hallway, then Jessica is a cat.
hypothesis: Chances are about even that either Bill went to the hallway, or Julius is a lion.
valid_hypothesis: Chances are about even that either Bill went to the hallway, or Julius is a lion.
invalid_hypothesis: It is certain that either Bill went to the hallway, or Julius is a lion.
hypothesis_assertion: Either Bill went to the hallway, or Julius is a lion.