context: We doubt that John got the apple. There is a better than even chance that Bernhard is a lion. It is probably the case that Winona is a mouse. It is improbable that if Winona is a mouse, and Bernhard is a lion, then Brian is a rhino. It is likely that if Winona is a mouse, or John got the apple, then Mary went to the bedroom. It is probable that if either John got the apple, or Bernhard is a lion, then Lily is a frog.
hypothesis: There is a better than even chance that either John got the apple, or Winona is a mouse.
valid_hypothesis: There is a better than even chance that either John got the apple, or Winona is a mouse.
invalid_hypothesis: There is almost no chance that either John got the apple, or Winona is a mouse.
hypothesis_assertion: Either John got the apple, or Winona is a mouse.