context: There is a better than even chance that John left the football. We doubt that Greg is a rhino. There is almost no chance that Bernhard is gray. Chances are about even that if Bernhard is gray, and Greg is a rhino, then Brian is a swan. It is unlikely that if Greg is a rhino, or John left the football, then Lily is green. We believe that if either Bernhard is gray, or John left the football, then Sandra took the milk.
hypothesis: We doubt that either Bernhard is gray, or Lily is green.
valid_hypothesis: We doubt that either Bernhard is gray, or Lily is green.
invalid_hypothesis: It is probable that either Bernhard is gray, or Lily is green.
hypothesis_assertion: Either Bernhard is gray, or Lily is green.