context: There is a very good chance that Bernhard is a lion. It is probable that Greg is a rhino. It is highly unlikely that Mary moved to the office. Chances are about even that if Mary moved to the office, or Bernhard is a lion, then Daniel left the apple. We doubt that if either Bernhard is a lion, or Mary moved to the office, then Lily is gray. Chances are slight that if Bernhard is a lion, or Mary moved to the office, then Bill went to the garden.
hypothesis: It is improbable that either Greg is a rhino, or Lily is gray.
valid_hypothesis: There is a better than even chance that either Greg is a rhino, or Lily is gray.
invalid_hypothesis: It is improbable that either Greg is a rhino, or Lily is gray.
hypothesis_assertion: Either Greg is a rhino, or Lily is gray.