context: It is probable that Julius is green. There is a better than even chance that Bernhard is a swan. It is certain that John got the milk.
hypothesis: Chances are about even that either John got the milk, or Bernhard is a swan.
valid_hypothesis: Chances are about even that either John got the milk, or Bernhard is a swan.
invalid_hypothesis: It is impossible that either John got the milk, or Bernhard is a swan.
hypothesis_assertion: Either John got the milk, or Bernhard is a swan.