context: It is unlikely that Greg is white. It is unlikely that Brian is green. It is probably the case that John went to the hallway. Chances are about even that if Brian is green, and John went to the hallway, then Bill dropped the milk. There is almost no chance that if Greg is white, and Brian is green, then Fred is in the bedroom. It is likely that if John went to the hallway, or Greg is white, then Mary moved to the garden.
hypothesis: It is probable that either Fred is in the bedroom, or John went to the hallway.
valid_hypothesis: It is probable that either Fred is in the bedroom, or John went to the hallway.
invalid_hypothesis: It is highly unlikely that either Fred is in the bedroom, or John went to the hallway.
hypothesis_assertion: Either Fred is in the bedroom, or John went to the hallway.