context: It is highly unlikely that Greg is gray. We doubt that Julius is a rhino. It is probably not the case that Bill moved to the office. It is improbable that if either Julius is a rhino, or Bill moved to the office, then Lily is a lion. There is a very good chance that if Greg is gray, and Bill moved to the office, then Mary put down the milk. It is improbable that if either Greg is gray, or Bill moved to the office, then John picked up the apple.
hypothesis: It is almost certain that mary put down the milk, or Julius is a rhino.
valid_hypothesis: It is unlikely that mary put down the milk, or Julius is a rhino.
invalid_hypothesis: It is almost certain that mary put down the milk, or Julius is a rhino.
hypothesis_assertion: Mary put down the milk, or Julius is a rhino.