context: It is highly unlikely that John went to the office. It is probable that Greg is a lion. It is highly unlikely that Lily is gray. It is certain that if Lily is gray, or John went to the office, then Julius is a swan. There is a better than even chance that if Lily is gray, and Greg is a lion, then Bernhard is a rhino. It is unlikely that if either Lily is gray, or John went to the office, then Bill is in the kitchen.
hypothesis: It is probable that either Lily is gray, or Julius is a swan.
valid_hypothesis: It is highly unlikely that either Lily is gray, or Julius is a swan.
invalid_hypothesis: It is probable that either Lily is gray, or Julius is a swan.
hypothesis_assertion: Either Lily is gray, or Julius is a swan.