context: We doubt that John went to the garden. It is impossible that Sandra left the apple. We believe that Bernhard is a swan. Chances are about even that if either Sandra left the apple, or John went to the garden, then Julius is gray. Chances are about even that if either Bernhard is a swan, or Sandra left the apple, then Lily is a frog. There is a very good chance that if either Sandra left the apple, or Bernhard is a swan, then Greg is green.
hypothesis: There is a better than even chance that either Greg is green, or Sandra left the apple.
valid_hypothesis: There is a better than even chance that either Greg is green, or Sandra left the apple.
invalid_hypothesis: There is almost no chance that either Greg is green, or Sandra left the apple.
hypothesis_assertion: Either Greg is green, or Sandra left the apple.