context: There is almost no chance that Mary picked up the apple. We believe that Bernhard is gray. Chances are slight that Greg is green. We believe that if Bernhard is gray, and Mary picked up the apple, then Gertrude is a wolf. It is likely that if Bernhard is gray, and Mary picked up the apple, then Brian is gray. It is highly unlikely that if Mary picked up the apple, or Bernhard is gray, then Daniel dropped the milk.
hypothesis: It is highly likely that either Greg is green, or Gertrude is a wolf.
valid_hypothesis: There is little chance that either Greg is green, or Gertrude is a wolf.
invalid_hypothesis: It is highly likely that either Greg is green, or Gertrude is a wolf.
hypothesis_assertion: Either Greg is green, or Gertrude is a wolf.