context: It is probably not the case that Sandra dropped the apple. It is unlikely that Lily is a lion. It is probably not the case that Bernhard is a lion.
hypothesis: Chances are about even that bernhard is a lion, or Lily is a lion.
valid_hypothesis: Chances are about even that bernhard is a lion, or Lily is a lion.
invalid_hypothesis: It is certain that bernhard is a lion, or Lily is a lion.
hypothesis_assertion: Bernhard is a lion, or Lily is a lion.