context: There is almost no chance that Brian is a lion. We doubt that John took the apple. It is unlikely that Bernhard is gray. It is unlikely that if either Brian is a lion, or Bernhard is gray, then Greg is a swan. There is a better than even chance that if Brian is a lion, or John took the apple, then Julius is a rhino. It is certain that if John took the apple, or Brian is a lion, then Mary moved to the garden.
hypothesis: It is highly likely that either Mary moved to the garden, or Julius is a rhino.
valid_hypothesis: It is improbable that either Mary moved to the garden, or Julius is a rhino.
invalid_hypothesis: It is highly likely that either Mary moved to the garden, or Julius is a rhino.
hypothesis_assertion: Either Mary moved to the garden, or Julius is a rhino.