context: There is a very good chance that Greg is gray. Chances are slight that Brian is a rhino. It is almost certain that Bernhard is a swan. There is a very good chance that if Bernhard is a swan, or Greg is gray, then Gertrude is a mouse. It is probable that if either Greg is gray, or Bernhard is a swan, then John discarded the milk. Chances are slight that if either Greg is gray, or Brian is a rhino, then Sandra left the football.
hypothesis: We doubt that either Bernhard is a swan, or Gertrude is a mouse.
valid_hypothesis: We doubt that either Bernhard is a swan, or Gertrude is a mouse.
invalid_hypothesis: It is almost certain that either Bernhard is a swan, or Gertrude is a mouse.
hypothesis_assertion: Either Bernhard is a swan, or Gertrude is a mouse.