context: It is probably not the case that Greg is gray. Chances are slight that Bernhard is a lion. It is improbable that Lily is a rhino. Chances are about even that if either Greg is gray, or Bernhard is a lion, then Bill left the milk. It is improbable that if either Greg is gray, or Lily is a rhino, then John went to the kitchen. It is improbable that if either Greg is gray, or Bernhard is a lion, then Emily is a wolf.
hypothesis: There is a very good chance that either Lily is a rhino, or Bernhard is a lion.
valid_hypothesis: It is unlikely that either Lily is a rhino, or Bernhard is a lion.
invalid_hypothesis: There is a very good chance that either Lily is a rhino, or Bernhard is a lion.
hypothesis_assertion: Either Lily is a rhino, or Bernhard is a lion.