context: It is certain that Brian is a lion. There is a very good chance that Bernhard is green. It is unlikely that Greg is a rhino.
hypothesis: It is impossible that brian is a lion, or Bernhard is green.
valid_hypothesis: It is certain that brian is a lion, or Bernhard is green.
invalid_hypothesis: It is impossible that brian is a lion, or Bernhard is green.
hypothesis_assertion: Brian is a lion, or Bernhard is green.