context: We doubt that Bernhard is a lion. There is almost no chance that Brian is white. It is impossible that Greg is a frog.
hypothesis: We doubt that either Brian is white, or Bernhard is a lion.
valid_hypothesis: We doubt that either Brian is white, or Bernhard is a lion.
invalid_hypothesis: It is probable that either Brian is white, or Bernhard is a lion.
hypothesis_assertion: Either Brian is white, or Bernhard is a lion.