context: Chances are about even that Jeff moved to the office. It is almost certain that Julius is a frog. It is probably not the case that Greg is a swan. It is likely that if Julius is a frog, or Greg is a swan, then Bill went to the bedroom. It is probably not the case that if either Greg is a swan, or Julius is a frog, then John is in the hallway. There is a very good chance that if Julius is a frog, and Jeff moved to the office, then Gertrude is a mouse.
hypothesis: Chances are about even that either Jeff moved to the office, or John is in the hallway.
valid_hypothesis: Chances are about even that either Jeff moved to the office, or John is in the hallway.
invalid_hypothesis: It is almost certain that either Jeff moved to the office, or John is in the hallway.
hypothesis_assertion: Either Jeff moved to the office, or John is in the hallway.