context: It is likely that Brian is a rhino. We doubt that Bernhard is gray. We believe that Lily is green. We doubt that if Bernhard is gray, or Brian is a rhino, then Mary got the football. It is probably the case that if Bernhard is gray, or Lily is green, then John went to the hallway. It is unlikely that if Lily is green, or Bernhard is gray, then Greg is a lion.
hypothesis: There is almost no chance that either Bernhard is gray, or John went to the hallway.
valid_hypothesis: Chances are about even that either Bernhard is gray, or John went to the hallway.
invalid_hypothesis: There is almost no chance that either Bernhard is gray, or John went to the hallway.
hypothesis_assertion: Either Bernhard is gray, or John went to the hallway.