context: Chances are slight that Mary left the apple. There is a better than even chance that Julius is a frog. It is highly unlikely that Jeff went to the kitchen. It is improbable that if either Jeff went to the kitchen, or Julius is a frog, then Jessica is a mouse. It is probably not the case that if Jeff went to the kitchen, or Mary left the apple, then Lily is gray. There is a very good chance that if Julius is a frog, or Jeff went to the kitchen, then Bernhard is a lion.
hypothesis: It is improbable that either Julius is a frog, or Bernhard is a lion.
valid_hypothesis: It is improbable that either Julius is a frog, or Bernhard is a lion.
invalid_hypothesis: It is certain that either Julius is a frog, or Bernhard is a lion.
hypothesis_assertion: Either Julius is a frog, or Bernhard is a lion.