context: There is a very good chance that John dropped the milk. We believe that Brian is a frog. It is certain that Bernhard is a swan.
hypothesis: It is impossible that john dropped the milk, or Bernhard is a swan.
valid_hypothesis: It is certain that john dropped the milk, or Bernhard is a swan.
invalid_hypothesis: It is impossible that john dropped the milk, or Bernhard is a swan.
hypothesis_assertion: John dropped the milk, or Bernhard is a swan.