context: Chances are about even that Julius is a rhino. We doubt that John is in the bedroom. There is almost no chance that Greg is gray. We doubt that if either John is in the bedroom, or Julius is a rhino, then Mary left the football. It is probably not the case that if either Julius is a rhino, or John is in the bedroom, then Lily is a frog. It is highly unlikely that if either John is in the bedroom, or Julius is a rhino, then Bernhard is white.
hypothesis: Chances are about even that either Greg is gray, or Julius is a rhino.
valid_hypothesis: Chances are about even that either Greg is gray, or Julius is a rhino.
invalid_hypothesis: It is impossible that either Greg is gray, or Julius is a rhino.
hypothesis_assertion: Either Greg is gray, or Julius is a rhino.